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Regulation effects of water and nitrogen on yield,water,and nitrogen use efficiency of wolfberry

Journal of Arid Land 2024年第1期16卷 29-45页

作者： GAO Yalin QI Guangping MA Yanlin YIN Minhua WANG Jinghai WANG Chen TIAN Rongrong XIAO Feng LU Qiang WANG Jianjun College of water Conservancy and Hydropower Engineering Gansu Agricultural UniversityLanzhou 730070China Jingtaichuan Electric Power irrigation water Resource Utilization Center in Gansu Province Baiyin 730900China

Wolfberry(Lycium barbarum L.)is important for health care and ecological ***,it faces problems of low productivity and resource utilization during *** reasonable models for water and nitrogen management is important for solving these *** on field trials in 2021 and 2022,this study analyzed the effects of controlling soil water and nitrogen application levels on wolfberry height,stem diameter,crown width,yield,and water(WUE)and nitrogen use efficiency(NUE).The upper and lower limits of soil water were controlled by the percentage of soil water content to field water capacity(θ_(f)),and four water levels,i.e.,adequate irrigation(W0,75%-85%θ_(f)),mild water deficit(W1,65%-75%θ_(f)),moderate water deficit(W2,55%-65%θ_(f)),and severe water deficit(W3,45%-55%θ_(f))were used,and three nitrogen application levels,i.e.,no nitrogen(N0,0 kg/hm^(2)),low nitrogen(N1,150 kg/hm^(2)),medium nitrogen(N2,300 kg/hm^(2)),and high nitrogen(N3,450 kg/hm^(2))were *** results showed that irrigation and nitrogen application significantly affected plant height,stem diameter,and crown width of wolfberry at different growth stages(Pwater *** weight per hundred grains and dry weight percentage increased with increasing nitrogen application under W0 ***,under other water treatments,the values first increased and then decreased with increasing nitrogen *** and its component of wolfberry first increased and then decreased as water deficit increased under the same nitrogen *** water use efficiency(IWUE,8.46 kg/(hm^(2)·mm)),WUE(6.83 kg/(hm^(2)·mm)),partial factor productivity of nitrogen(PFPN,2.56 kg/kg),and NUE(14.29 kg/kg)reached their highest values in W2N2,W1N2,W1N2,and W1N1 treatments.R

关键词： water deficit growth characteristics yield water and nitrogen use efficiency principal component analysis

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Effects of warming and drought stress on the growth characteristics,photosynthetic-transpiration rates,and yield of winter wheat

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 121-129页

作者： Qian Li Yang Gao Abdoul Kader Mounkaila Hamani Guangshuai Wang Junming Liu Yuanyuan Fu Xingpeng Wang College of water Resource and Architecture Engineering Tarim UniversityAlar 843300XinjiangChina Institute of Farmland irrigation Chinese Academy of Agricultural SciencesXinxiang 453002HenanChina

Climate change has limited crop productivity *** crop response to global climate changes is vital to maintaining agricultural sustainable development.A two-year experiment was conducted to investigate the effects of warming and drought on crop growth and winter wheat yield *** results showed that both warming and drought shortened the crop growth period,reduced the leaf area index,and increased winter wheat biomass *** sufficient water supply conditions,warming would increase photosynthetic and transpiration rates and water use efficiency,while under water deficit conditions,the opposite was *** warming conditions,the grain yield of the water deficit treatment was 8.9%lower than that of the sufficient water supply *** non-warming conditions,the grain yield of water deficit treatment was 12.4%lower than that of the sufficient water *** the conditions of water-sufficient supply,the grain yield of the warming treatment was 4.4%lower than that of the non-warming treatment,and under the conditions of water deficit,the grain yield of the warming treatment was 1.3%lower than that of the non-warming *** tends to decrease wheat growth and grain yield,but sufficient water supply could improve winter wheat’s water use efficiency and reduce the warming limitation on wheat production.

关键词： winter wheat warming leaf area index photosynthetic rate yield biomass

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Variable fuzzy assessment of water use efficiency and benefits in irrigation district

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water Science and Engineering 2015年第3期8卷 205-210页

作者： Ming-hui Wang Guang-cheng Shao Jia-jia Meng Chang-ren Chen Dou-dou Huang Suqian water Survey and Design Research Co. Ltd Key Laboratory of Efficient irrigation-Drainage and Agricultural Soil-water Environment in Southern China Ministry of Education College of Water Conservancy and Hydropower Engineering Hohai University Huai'an water Resources Planning Office water Resources Department of Jiangsu Province

In order to scientifically and reasonably evaluate water use efficiency and benefits in irrigation districts, a variable fuzzy assessment model was established. The model can reasonably determine the relative membership degree and relative membership function of the sample indices in each index’s standard interval, and obtain the evaluation level of the sample through the change of model parameters. According to the actual situation of the Beitun irrigation District, which is located in Fuhai County, in Altay City, Xinjiang Uyghur Autonomous Region, five indices were selected as evaluation factors, including the canal water utilization coefficient, field water utilization coefficient, crop water productivity,effective irrigation rate in farmland, and water-saving irrigation area ratio. The water use efficiency and benefits in the Beitun irrigation District in different years were evaluated with the model. The results showed that the comprehensive evaluation indices from 2006 to 2008 were all at the third level(medium efficiency), while the index in 2009 increased slightly, falling between the second level(relatively high efficiency) and third level, indicating an improvement in the water use efficiency and benefits in the Beitun irrigation District, which in turn showed that the model was reliable and easy to use. This model can be used to assess the water use efficiency and benefits in similar irrigation districts.

关键词： Variable fuzzy assessment water use efficiency and benefits Beitun irrigation District

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Spectral matching based remote sensing identification of two main crop rotation patterns in a large irrigation district

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中国水利水电科学研究院学报(中英文) 2024年

作者： DUAN Yuanyuan CHEN Xiuhua LIU Jun YE Mao LU Wenjing LIU Hongjie China Institute of water Resources and Hydropower Research Application Center of Remote Sensing Technology Research Center on Flood & Drought Disaster Prevention and Reduction of the Ministry of Water Resources Qingdao Comcore Technologies Co. Ltd Sucheng District water Resources Bureau

Abstract:The rapid identification of planting patterns for major crops in a large irrigated district has vital importance for irrigation management,water fee collection,and crop yield *** this study,the OTSU algorithm and Mean-Shift algorithm were employed to automatically determine threshold values for mapping two main rotated crop patterns at the pixel scale.A time series analysis was conducted to extract the spatial distribution of rice-wheat and wheat-maize rotations in the Chuanhang irrigation district from 2016 to *** results demonstrate that both threshold segmentation algorithms are reliable in extracting the spatial distribution of the crops,with an overall accuracy exceeding 80%.Additionally,both Kappa coefficients surpass 0.7,indicating better performance by OTSU *** the period from 2016 to 2020,the area occupied by ricewheat rotation cropping ranged from 12 500 to 14 400 hm2;whereas wheat-maize rotation cropping exhibited smaller and more variable areas ranging from 19730 to 34070 *** findings highlight how remote sensing-based approaches can provide reliable support for rapidly and accurately identifying the spatial distribution of main crop rotation patterns within a large irrigation district.

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Effect of different water application intensity and irrigation amount treatments of microirrigation on soil-leaching coastal saline soils of North China

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Journal of Integrative Agriculture 2016年第9期15卷 2123-2131页

作者： CHU Lin-lin KANG Yao-hu WAN Shu-qin Key Laboratory of Efficient irrigation-Drainage and Agricultural Soil-water Environment in Southern China Ministry of Education/College of Water Conservancy and Hydropower Engineering Hohai University Key Laboratory of water Cycle and Related Land Surface Processes Institute of Geographic Science and Natural Resources Research Chinese Academy of Sciences

In coastal regions, Bohai Gulf is one of the most affected areas by salinization. To study the effects of mocrosprinkler irrigation on the characteristics of highly saline sandy loam soil（ECe（saturated paste extract）=22.3 d S m^–1; SAR（sodium adsorption ratio）=49.0） of North China, a laboratory experiment was conducted. Five water application intensity（WAI） treatments（1.7, 3.1, 5.3, 8.8, and 10.1 mm h^–1）, five irrigation amount（IA） treatments（148, 168, 184, 201, and 223 mm） and three time periods of water redistribution（0, 24 and 48 h） were employed in the study. A compounding microsprinkler system was used for the WAI treatments, and a single microsprinkler was used for the IA treatments. The results indicated that, as soil depth increased, soil water content（θ） increased and then slightly decreased; with WAI and IA consistently increasing, the relatively moist region expanded and the average θ increased. Meanwhile, soil ECe increased as soil depth increased, and the zone with low soil salinity expanded as WAI and IA increased. Although the reduction of the average SAR was smaller than that of the average electrical conductivity of the ECe, these variables decreased in similar fashion as WAI and IA increased under microsprinkler irrigation. The average p H decreased as soil depth increased. Longer time periods of water redistribution led to lower salinity and slight expansion of the SAR zone. Considering the effects of leached salts in coastal saline soils, greater WAI and IA values are more advantageous under unsaturated flow conditions, as they cause better water movement in the soil. After leaching due to microsprinkler irrigation, highly saline soil gradually changes to moderately saline soil. The results provide theoretical and technological guidance for the salt leaching and landscaping of highly saline coastal environments.

关键词： coastal saline soil microsprinkler irrigation SAR reclamation

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Appropriate supply of irrigation and nitrogen produced higher yields of cherry tomatoes

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 149-158页

作者： Zelin Cai Mengchi Zhang Jiarui Xie Tingting Kong Yuxuan Zhang Zhihao He Zhi Zhang College of Horticulture Northwest A&F UniversityYangling 712100ShaanxiChina Key Laboratory of Protected Horticultural Engineering in Northwest Ministry of Agriculture/Shaanxi Province Facility Agriculture Engineering CenterYangling 712100ShaanxiChina Key Laboratory for Agricultural Soil and water Engineering in Arid Area of ministry of Education Northwest A&F UniversityYangling 712100ShaanxiChina

Accurate irrigation and nitrogen application are essential for promoting the growth and yield of cherry *** investigating the effects of irrigation and nitrogen on the growth,photosynthesis,and yield of cherry tomatoes,nine treatments including three levels of both irrigation and nitrogen were conducted over two growing *** stem diameter and horizontal stem diameter had the best performance at the irrigation level of 75%evaporation(E_(p)),although their responses to nitrogen were different for the two *** height increased with the increase of irrigation and *** dry matter(PDM)was significantly affected by irrigation and nitrogen *** lowest PDM was found in the highest proportion of root dry matter,which occurred under low nitrogen *** net photosynthetic rate(Pn)and transpiration rate enhanced with the increase of *** nitrogen showed promotion effect on all photosynthetic parameters in both growing *** of all fourteen indicators showed significant correlations with ***,single plant fruit number and PDM in 2018 Fall had significant positive direct effects on yield with the path coefficients of 0.648 and 1.159,while the significant direct path coefficients were 0.362 and 0.294 in Fruit dry matter and Pn for 2019 Spring,*** on the comprehensive evaluation of growth and yield by TOPSIS,the irrigation level of 75%E_(p) combined with medium nitrogen application produced higher yields by promoting the growth and photosynthesis of cherry *** provides a strategy for water and nitrogen management of cherry tomatoes in Northwest China.

关键词： cherry tomatoes yield growth irrigation nitrogen path analysis

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Spatial-temporal distribution and impact factors of irrigation water use efficiency in the grain production of China

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International Journal of Agricultural and Biological Engineering 2018年第5期11卷 131-138页

作者： Xiangping Guo Mengyang Wu Xinchun Cao Zhenchang Wang Key Laboratory of Efficient irrigation-Drainage and Agricultural Soil-water Environment in Southern China of ministry of Education Hohai UniversityNanjing 210098China College of Agricultural Engineering Hohai UniversityNanjing 210098China

The marginal water productivity(MWP)model for the real irrigation water use performance and productivity assessment,applies to the regional scale was established in this *** temporal-spatial patterns and attribution analyses of the indicator were conducted using spatial autocorrelation and path analysis *** results showed that with an average annual increase of 3.4%,the national MWP was estimated to be 0.542 kg/m,between 1998 and *** spatial autocorrelation analysis results showed the global Moran’s I inspection values(Z)were higher than the confidence level,and the provinces,municipalities and autonomous regions(PAMs)with similar MWP values showed significant *** with a high value are centered in the middle and lower streams of the Yellow River,and those regions with a lower MWP were distributed in northeastern China and south of the Yangtze *** precipitation and temperature are the major meteorological factors that determined the indicator,while extending the fertilizer and agricultural machinery input is the effective approach for improving the regional *** major grain producing areas of North and Northeast China should take measures to raise their MWP,ensure food security and the sustainable use of water resources.

关键词： water use efficiency the marginal output spatial autocorrelation path analysis food security

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Dynamic regulation of the irrigation-nitrogen-biochar nexus for the synergy of yield,quality,carbon emission and resource use efficiency in tomato

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Journal of Integrative Agriculture 2024年第2期23卷 680-697页

作者： Ping’an Zhang Mo Li Qiang Fu Vijay PSingh Changzheng Du Dong Liu Tianxiao Li Aizheng Yang School of water Conservancy&Civil Engineering Northeast Agricultural UniversityHarbin 150030China Key Laboratory of Effective Utilization of Agricultural water Resources Ministry of Agriculture and Rural Affairs/Northeast Agricultural UniversityHarbin 150030China Department of Biological and Agricultural Engineering&Zachry Department of Civil&Environmental Engineering Texas A&M UniversityTX 77843-117USA National water and Energy Center UAE UniversityAI Ain999041United Arab Emirates Heilongjiang Agricultural Engineering Vocational College Harbin 150030China

Integrated water and fertilizer management is important for promoting sustainable development of facility agriculture,and biochar plays an important role in guaranteeing food production,as well as alleviating water shortages and the overuse of *** field experiment had twelve treatments and a control(CK)trial including two irrigation amounts(I1,100%ETm;I2,60%ETm;where ETm is the maximum evapotranspiration),two nitrogen applications(N1,360 kg ha^(−1);N2,120 kg ha^(−1))and three biochar application levels(B1,60 t ha^(−1);B_(2),30 t ha^(−1)and B3,0 t ha^(−1)).A multi-objective synergistic irrigation-nitrogen-biochar application system for improving tomato yield,quality,water and nitrogen use efficiency,and greenhouse emissions was developed by integrating the techniques of experimentation and ***,a coupled irrigation-nitrogen-biochar plot experiment was ***,tomato yield and fruit quality parameters were determined experimentally to establish the response relationships between irrigation-nitrogen-biochar dosage and yield,comprehensive quality of tomatoes(TCQ),irrigation water use efficiency(IWUE),partial factor productivity of nitrogen(PFPN),and net greenhouse gas emissions(NGE).Finally,a multi-objective dynamic optimization regulation model of irrigation-nitrogen-biochar resource allocation at different growth stages of tomato was constructed which was solved by the fuzzy programming *** results showed that the application of irrigation and nitrogen to biochar promoted increase in yield,IWUE and PFPN,while it had an inhibitory effect on *** addition,the optimal allocation amounts of water and fertilizer were different under different *** yield of the S1 scenario increased by 8.31%compared to the B_(1)I_(1)N_(2) treatment;TCQ of the S2 scenario increased by 5.14%compared to the B_(2)I_(2)N_(1) treatment;IWUE of the S3 scenario increased by 10.01%compared to the B1I2N2 treatment;PFPN of the S4 scenario increased by

关键词： irrigation-nitrogen-biochar dynamic regulation multi-dimensional target collaboration tomato sustainability

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Field performance of alternate wetting and drying furrow irrigation on tomato crop growth, yield, water use efficiency, quality and profitability

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Journal of Integrative Agriculture 2016年第10期15卷 2380-2392页

作者： Khokan Kumer Sarker M.A.R.Akanda S.K.Biswas D.K.Roy A.Khatun M.A.Goffar irrigation and water Management Division Bangladesh Agricultural Research Institute Horticulture Research Centre Bangladesh Agricultural Research Institute

Sustainable irrigation method is now essential for adaptation and adoption in the areas where water resources are limited. Therefore, a field experiment was conducted to test the performance of alternate wetting and drying furrow irrigation（AWDFI） on crop growth, yield, water use efficiency（WUE）, fruit quality and profitability analysis of tomato. The experiment was laid out in randomized complete block design with six treatments replicated thrice during the dry seasons of 2013-2014 and 2014-2015. irrigation water was applied through three ways of furrow： AWDFI, fixed wetting and drying furrow irrigation（FWDFI） and traditional（every） furrow irrigation（TFI）. Each irrigation method was divided into two levels： irrigation up to 100 and 80% field capacity（FC）. Results showed that plant biomass（dry matter） and marketable fruit yield of tomato did not differ significantly between the treatments of AWDFI and TFI, but significant difference was observed in AWDFI and in TFI compared to FWDFI at same irrigation level. AWDFI saved irrigation water by 35 to 38% for the irrigation levels up to 80 and 100% FC, compared to the TFI, respectively. AWDFI improved WUE by around 37 to 40% compared to TFI when irrigated with 100 and 80% FC, respectively. Fruit quality（total soluble solids and pulp） was found greater in AWDFI than in TFI. Net return from AWDFI technique was found nearly similar compared to TFI and more than FWDFI. The benefit cost ratio was viewed higher in AWDFI than in TFI and FWDFI by 2.8, 8.7 and 11, 10.4% when irrigation water was applied up to 100 and 80% FC, respectively. Unit production cost was obtained lower in AWDFI compared to TFI and FWDFI. However, AWDFI is a useful water-saving furrow irrigation technique which may resolve as an alternative choice compared with TFI in the areas where available water and supply methods are limited to irrigation.

关键词： alternate furrow irrigation alternate drying process tomato yield quality water use efficiency net return

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Effects of Drip System Uniformity and irrigation Amount on water and Salt Distributions in Soil Under Arid Conditions

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Journal of Integrative Agriculture 2013年第5期12卷 924-939页

作者： GUAN Hong-jie LI Jiu-sheng LI Yan-feng State Key Laboratory of Simulation and Regulation of water Cycle in River Basin China Institute of Water Resources and Hydropower Research National Center of Efficient irrigation Engineering and Technology Research-Beijing

The dynamics of water and salt in soil were monitored in the 2010 and 2011 growing seasons of cotton to evaluate the salinity risk of soil under drip irrigation in arid environments for different management practices of drip system uniformity and irrigation amount. In the experiments, three Christiansen uniformity coefficients （CU） of approximately 65, 80, and 95% （referred to as low, medium, and high uniformity, respectively） and three irrigation amounts of 50, 75, and 100% of full irrigation were used. The distribution of the soil water content and bulk electrical conductivity （ECb） was monitored continuously with approximately equally spaced frequency domain reflectometry （FDR） sensors located along a dripline. Gravimetric samples of soil were collected regularly to determine the distribution of soil salinity. A great fluctuation in CU of water content and ECb at 60 cm depth was observed for the low uniformity treatment during the irrigation season, while a relatively stable variation pattern was observed for the high uniformity treatment. The ECb CU was substantially lower than the water content CU and its value was greatly related to the water content CU and the initial ECb CU. The spatial variation of seasonal mean soil water content and seasonal mean soil bulk electrical conductivity showed a high dependence on the variation pattern of emitter discharge rate along a dripline for the low and medium uniformity treatments. A greater irrigation amount produced a significantly lower soil salinity at the end of the irrigation season, while the influence of the system uniformity on the soil salinity was insignificant at a probability level of 0.1. In arid regions, the determination of the target drip irrigation system uniformity should consider the potential salinity risk of soil caused by nonuniform water application as the influence of the system uniformity on the distribution of the soil salinity was progressively strengthened during the growing season of crop.

关键词： drip irrigation uniformity soil water content soil bulk electrical conductivity soil salinity

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