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Total Amount Control Test of Nitrogen Fertilizer and Phosphate Fertilizer on winter wheat

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Agricultural Science & Technology 2016年第5期17卷 1142-1144页

作者：韩明慧汤国民姜新于立芝中国农业大学烟台研究院山东烟台264670 烟台市农业科学研究院山东烟台265500

[Objective] This study was conducted to optimize the suitable application amounts of nitrogen fertilizer and phosphate fertilizer for winter wheat.[Method] A field experiment was carried out to investigate the effects of the application amounts of nitrogen fertilizer and phosphate fertilizer on the yield of winter wheat.[Result]The quadratic simulation function between the application of nitrogen fertilizer and wheat yield was y =-0.6611x^2＋20.091 x ＋234.85,with a correlation coefficient of0.970 8,and the yield of winter wheat was the highest at the application amount of nitrogen fertilizer of 228.0 kg/hm^*** quadratic simulation function between the application of phosphate fertilizer and wheat yield was y =-0.572 6x^2＋13.168 x ＋340.4,with a correlation coefficient of 0.921 95,and the yield of winter wheat was the highest at the application amount of phosphate fertilizer of 172.5 kg/hm^2.[Conclusion] This study provides a scientific basis for the rational application of nitrogen fertilizer and phosphate fertilizer on winter wheat.

关键词： winter wheat Nitrogen fertilizer Phosphate fertilizer Total amount control test

Evapotranspiration and ratio of soil evaporation to evapotranspiration of winter wheat and maize in north China

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International Journal of Technology Management 2013年第2期 100-103页

作者： Zheng Wei Yu Liu Di Xu Jiabing Cai National Center of Efficient Irrigation Engineering and Technology Research 100044 Beijing State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower Research 100044Beijing

Evapotranspiration （ETc） is an important quantity for hydrological cycle. This study shows evapotranspiration, the ratio of evaporation to evapotranspiration （E/ETc） of winter wheat and maize in north China. Several relationships, namely, E/ET0 and soil surface moisture, E/ET0 and leaf area index （LAI）, are also analyzed. The average seasonal ETc values for winter wheat, maize （2008） and maize （2009） are 431.21,456.3 and 341.4mm. The value of E/ET0 varied from 1 at initial growth stage to 0.295 at the later growth for winter wheat, and from 1 to 0.492, from 1 to 0.566 for maize （2008） and maize （2009）. The relationship between E/ET0 and surface soil water content, and E/ET0 and LAI are fitted to a quadratic parabola equation with significant correlation coefficients, respectively, for wheat and maize. These results should help the precise planning and efficient management of irrigation for these crops in this region.

关键词： evapotranspiration soil evaporation surface soil water content winter wheat maize

Effect of Snowstorm on winter wheat Production in Tacheng Basin in 2009

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Meteorological and Environmental Research 2010年第8期1卷 76-79页

作者：朱海江曾春蕾王雪茹董海英于晓新疆塔城地区气象局新疆塔城834700

Located in Eurasia inland,Tacheng Basin belongs to arid and semi-arid climate region in middle temperate zone,and the main crops include winter wheat,spring wheat,maize,seeding-watermelon,sugar beet and so on,while winter wheat is the main food *** November 2009 to March 2010,a snowstorm which occurred every 60 years appeared in Tacheng Basin,and there was more snowfall in five continuous months,while this snowfall broke through the extreme value in history and reached a historic *** on the comparison between practical monitoring data and history data of winter wheat,the effects of snowstorm on winter wheat production were analyzed.

关键词： Snowstorm Snowfall winter wheat Production Effect China

Delayed Sowing can Maintain Grain Yield and Nitrogen Use Efficiency of winter wheat while Raising Lodging Resistance

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Delayed Sowing can Maintain Grain Yield and Nitrogen Use Eff...

2016年全国青年作物栽培与生理学术研讨会

作者：代兴龙 Wang Yue-chao JIA Dian-yong 贺明荣 National Key Lab.of Crop Biology Life Science and Technology College Nanyang Normal University

【Background and Aims】 Grain yield and nitrogen use efficiency(NUE) of winter wheat could be synchronously improved by managing the seeding ***,an increased seeding rate makes wheat plant more susceptible to *** or improving grain yield and NUE without a reduction in lodging resistance is a major goal of management strategy researchers.【Materials and Methods】 During the 2013-2014 and 2014-2015 seasons,two winter wheat cultivars were sown on three dates(conventional sowing on 8 October,early sowing on 1October,and delayed sowing on 15 October,with an average of 112.6 and 107.8 days ≥0℃temperature accumulation before and after conventional sowing prior to wintering,respectively)with relatively high seeding *** responses of grain yield,NUE,and lodging resistance to sowing date were investigated.【Results】 The early,conventional and late sowing resulted in no differences in grain yield based on the equivalent kernel weight and number of kernels per unit *** and conventional sowing showed equivalent NUE owing to equivalent NUE components;however,delayed sowing showed the same NUE by increasing nitrogen utilisation efficiency due to a reduction in grain nitrogen *** sowing significantly increased lodging resistance of winter wheat through reducing culm height at the centre of gravity and increasing tensile failure strength of the base internode.【Conclusions】 Sowing later man the conventional sowing times could synergistically observe high grain yield,NUE,and lodging resistance.

关键词： winter wheat Sowing date Grain yield Nitrogen use efficiency Lodging resistance

Study on Cumulative Function of Sensitive Index for winter wheat

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Study on Cumulative Function of Sensitive Index for Winter W...

2011 International Conference on New Technology of Agricultural Engineering(ICAE 2011)

作者： JIN Jian-hua WANG Yang-ren SUN Shu-hong HAN Na-na(Department of Water Conservancy Tianjin Agricultural University Tianjin 300384 China)

Based on different water deficit treatments,cumulative function of sensitive index for winter wheat was *** higher water sensitive index was in the period of 160-180 day after seeding,which reached *** results demonstrated that the cumulative function of sensitive index represented by a growing curve could describe the yield response to water deficit for winter wheat.

关键词： winter wheat crop water-production functions cumulative function of sensitive index

Assessing water use efficiency in winter wheat using the AquaCrop model with remote sensing data

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Assessing water use efficiency in winter wheat using the Aqu...

2014年全国青年作物栽培与生理学术研讨会

作者： Xiuliang Jin GuijunYang Haikuan Feng Zhenhai Li Xingang Xu Jihua Wang Wenshan Guo Key Laboratory of Crop Genetics and Physiology of JiangSu Province Yangzhou University Beijing Research Center for Information Technology in Agriculture Beijing Academy of Agriculture and Forestry Sciences National Engineering Research Center for Information Technology in Agriculture Beijing Research Center for Agri-food Testing and Farmland Monitoring

[Background]Water is an important limiting factor in crop irrigation *** the demand for domestic and industrial water has increased with the growing population,there is increasing competition in agriculture water resource *** resources for agriculture are becoming increasingly scarce in irrigation agriculture regions,for example,the North China Plain(NCP).Water productivity(WP) or water use efficiency(WUE,which is advocated as an indicator to analyze water use) to aid in water *** crop production,WUE has been generally defined as the amount of marketable product(e.g.,kilograms of grain,kg) in relation to the amount of input needed to produce that output(cubic meters of water,m3).In the NCP,50%of the total water resource is applied for field irrigation management in winter wheat,which is the key factor causing a decrease in groundwater *** current problems of serious water shortages and higher demand for crop yield can be solved by improving WUE in this region.[Materials and methods]The objectives of this study were:(i) to develop and test a model for assessing WUE in winter wheat,where the estimation methods,the empirical statistics spectral indices method and data assimilation method are tested;and(ii) to compare performance of the proposed models using the empirical statistics spectral indices method and the data assimilation *** variables and concurrent biomass,yield and WUE parameters of samples were acquired at the Xiaotangshan experimental site in Beijing,China,during the 2008/2009,2009/2010,2010/2011 and 2011/2012 winter wheat growing *** data assimilation scheme for remote sensing and AquaCrop model is *** sensitivity analysis method is used to select crop parameters for AquaCrop model,the database lookup table(DLT)was established according to the related files,regression analysis methods were constructed between the remote sensing data and the measured biomass to use remote sensing data for

关键词： Water use efficiency AquaCrop model Remote sensing Data assimilation winter wheat

EXTRACTION OF BIOCHEMICAL COMPONENTS IN winter wheat BY CANOPY HYPERSPECTRUM

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EXTRACTION OF BIOCHEMICAL COMPONENTS IN WINTER WHEAT BY CANO...

Progress of Information Technology in Agriculture

作者： Huang Wenjiang Wang Jihua Liu Liangyun Zhao Chunjiang Huang Muyi Wang JindiNational Engineering Research Center for Information Technology in Agriculture Beijing Post Code:100089 ChinaResearch Center for Remote Sensing and GIS Beijing Normal University Beijing Post Code:100875 China

＜正＞ winter wheat canopy spectrum is affected by wheat canopy （leaf area index, leaf biochemical components, leaf angle distribution,canopy shadows, et al.）, soil, weeds, environment and their interactions. So the uncertainties for crop canopy spectral information become a fatal problem for the canopy biochemical and biophysical variables extraction. Recent studies have demonstrated the application of spectral indices from hyperspectral data for crop biochemical and biophysical variables. These indices are the compositive response to variations of several vegetation and environmental properties. Canopy chlorophyll content, an indicator of photosynthesis activity, which is related the nitrogen concentration in green vegetation and serves as a measure of the crop response to nitrogen application. The combination of NDVI and PRI can reduce the effect of LAI and soil background. The index （CCII） was proved to be sensitive to chlorophyll concentration and very resistant to the variations. This paper introduced the application of the ratio TCARI/OSAVI to make accurate predictions of winter wheat chlorophyll content under different varieties, and the application of SIPI for canopy biochemical indicators inversion by minimizing foliar inner structure effect. It indicated that the canopy chlorophyll content and nitrogen concentration could be evaluated by some new combination vegetation indices.

关键词： winter wheat canopy spectrum uncertainties information extraction

Integrated management strategy for improving the grain yield and nitrogen-use efficiency of winter wheat

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Integrated management strategy for improving the grain yield...

2016年全国青年作物栽培与生理学术研讨会

作者：徐海成 Xinglong Dai Ting Zha Lijun Yin Xin Ma Jinpeng Chu 贺明荣 State Key Lab.of Crop Biology Key Lab.of Crop Ecophysiology and Farming SystemMinistry of AgricultureAgronomy College of Shandong Agricultural University

【Background and Aims】 Understanding on combinations of agronomic options,including seeding rate,sowing date,and nutrient management,to improve the grain yield and nitrogen(N) use efficiency(NUE) of winter wheat(Triticum aestivum L.) are *** performed a three-year experiment involving four integrated management strategies to evaluate changes in grain yield and NUE,and to determine an optimal management strategy.【Materials and Methods】 The integrated management treatments were designed as follows:current practice(T1);improved practice over current practice to offset major limitations to wheat plant growth(T2);high-yield management(T3),which aimed to maximize grain yield regardless of the cost of resource inputs;and integrated soil and crop system management for improved grain yield and NUE with a higher seeding rate,delayed sowing date,and optimized nutrient management(T4).【Results】Treatment T3 produced the highest grain yield among all treatments over three *** yield averaged across three years with the T4 treatment was 95.85%of that with T3 and was 21.72 and 6.10%higher than with T1 and T2,*** T2 produced the highest NUE of all the integrated *** NUE with T4 was 95.36%of that with T2 and was 51.91 and 25.62%higher than with T1 and T3,*** N-uptake efficiency(UPE) averaged across three years with T4 was50.75 and 16.62%higher than with T1 and T3,*** N-utilization efficiency(UTE) averaged across three years with T4 was 7.74%higher than with *** with T3,the increased UPE with T4 was attributed mostly to its far lower available N despite the lower aboveground N uptake(AGN),while the increased UTE with T4 was caused mainly by its highest N harvest index(NHI) and relatively low grain N concentration(GNC),which consequently led to the improved NUE.【Conclusions】 Therefore,if a decrease in yield of about 5%is acceptable,the T4 treatment should be recommended as the optimal management strategy for bo

关键词： Integrated management strategy grain yield nitrogen-use efficiency winter wheat

RESEARCH OF HERBICIDES SCREENING,THRESHOLD ON BROMUS JAPONICUS *** AEGILOPS TAUSCHII *** SAFETY TO winter wheat

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RESEARCH OF HERBICIDES SCREENING,THRESHOLD ON BROMUS JAPONIC...

中国第三届植物化感作用学术研讨会、第八届全国杂草科学大会、联合国粮农组织——中国“水稻化感作用论坛”

作者： Bing-hua LI~(1,2),Gui-qi WANG~2,Li-jun SU~2,Cui-qin FAN~2 and Jin-gao DONG ~1 1 College of biology science,AUH,Baoding 071001,2 Institute of Cereal and Oil Crops, HAAFS,Shijiazhuang 050031,P.R.China

The experiments researched fenoxaprop-ethyl,isoproturon,mesosulfuron and flucarbazone-sodium on the serious weeds,Bromus japonicus *** Aegilops tauschii Coss. in different leave stage at the green *** results showed t... 详细信息

关键词： winter wheat herbicide Bromus japonicus Thunb. Aegilops tauschii Coss. control threshold