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Tomato Root Response to subsurface drip irrigation

Pedosphere 2004年第2期14卷 205-212页

作者： ZHUGEYu-Ping ZHANGXu-Dong ZHANGYu-Long LIJun YANGLi-Juan HUANGYi LIUMing-Da KeyLaboratoryofTerrestrialEcologicalProcess InstituteofAppliedEcologyChineseAcademyofSciencesShenyang110016（China）.E-mail：zgyp@*** LandandEnvironmentalCollege ShenyangAgriculturalUniversityShenyang110161（China）

Four depth treatments of subsurface drip irrigation pipes were designated as 1) at 20,2) 30 and 3) 40 cm depths all with a drip-proof flumes underneath,and 4) at 30 cm without a drip-proof flume to investigate the responses of a tomato root system to different technical parameters of subsurface drip irrigation in a glass greenhouse,to evaluate tomato growth as affected by subsurface drip irrigation,and to develop an integrated subsurface drip irrigation method for optimal tomato yield and water use in a glass greenhouse. Tomato seedlings were planted above the subsurface drip irrigation pipe. Most of the tomato roots in treatment 1 were found in the top 0-20 cm soil depth with weak root activity but with yield and water use efficiency (WUE) significantly less (P ---- 0.05) than treatment 2; root activity and tomato yield were significantly higher (P = 0.05) with treatment 3 compared to treatment 1; and with treatment 2 the tomato roots and shoots grew harmoniously with root activity,nutrient uptake,tomato yield and WUE significantly higher (P= 0.05) or as high as the other treatments. These findings suggested that subsurface drip irrigation with pipes at 30 cm depth with a drip-proof flume placed underneath was best for tomato production in greenhouses. In addition,the irrigation interval should be about 7-8 days and the irrigation rate should be set to 225 m3 ha-1 per event.

关键词： greenhouse root system response soil water subsurface drip irrigation

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Yield and Quality Response of Cucumber to irrigation and Nitrogen Fertilization Under subsurface drip irrigation in Solar Greenhouse

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Agricultural Sciences in China 2011年第6期10卷 921-930页

作者： ZHANG He-xi CHI Dao-cai WANG Qun FANG Jun FANG Xiao-yu College of Water Resources Shenyang Agricultural University Shenyang 110161 P.R. China Guizhou Academy of Hydraulic Sciences Guiyang 550002 P.R.China

The aims of this research were to compare subsurface drip irrigation scheduling and nitrogen fertilization rates in cucumber, and evaluate yield and quality of cucumber fruit, water （WUE）, irrigation water （IWUE）, and nitrogen use （NUE） efficiencies in the solar greenhouse in Southwest China. The irrigation water amounts were determined based on the 20 cm diameter pan （Ep） placed over the crop canopy, and cucumber plant was subjected to three irrigation water levels （I1, 0.6 Ep; I2, 0.8 Ep; and I3, 1.0 Ep） in interaction with three nitrogen fertilization levels （N1, 300 kg ha-1; N2, 450 kg ha-1; and N3, 600 kg ha-1）. The results showed that the cucumber fruit yield increased with the improvement of irrigation water. irrigation water increased yields by increasing the mean weight of the fruits, and also by increasing fruit number. But the highest values of IWUE and WUE were obtained from I2 treatment. NUE significantly decreased with the improvement of N application, but increased by irrigating more water. The quality of cucumber fruit decreased with the improvement irrigation water and nitrogen fertilization. In conclusion, the optimum irrigation level and nitrogen fertilizer application level for cucunber under subsurface drip irrigation in the solar greenhouse in Southwest China were 0.8 Ep and 450 and 600 kg ha-1, respectively.

关键词： subsurface drip irrigation cucumber water use efficiency nitrogen use efficiency fruit quality

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Experimental study on calculation model of labyrinth emitter discharge under subsurface drip irrigation

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International Journal of Agricultural and Biological Engineering 2014年第6期7卷 14-19页

作者： Hou Wen Bai Dan Zhou Wen Institute of Water Resources and Hydroelectric Engineering Xi'an University of TechnologyXi'an 710048China College of Conservancy North China University of Water Resources and Electric PowerZhengzhou 450011China

For different texture of soils,the grain composition is different with significant *** the emitter of subsurface drip irrigation(SDI)is buried in the soil,emitter discharge is influenced by soil *** experiment was conducted to investigate the relationship between the soil properties with emitter working pressure and emitter discharge of *** three different grain composition soils,and emitter working pressure,as well as soil clay content,soil bulk density and initial soil moisture content respectively as influence factors of emitter discharge of SDI,the experimental scheme was gained by uniform design.A calculation model for determination of the SDI emitter discharge was established by regression analysis with the first two kinds of soil test data,and its reliability was verified by the third kind of soil test *** model is simple with high accuracy,easy to use,and lays the foundation to study hydraulic elements of SDI field network,especially taking the soil clay content as an influencing factor has widened the scope of application of the *** achievement is of great significance for design and management of SDI.

关键词： subsurface drip irrigation emitter soil clay content discharge calculation model

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Efect of Post-irrigation Aeration on Growth and Quality of Greenhouse Cucumber

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Pedosphere 2013年第6期23卷 790-798页

作者： NIU Wen-Quan FAN Wen-Tao N.PERSAUD ZHOU Xiao-Bo Institute of Soil and Water Conservation Northwest A&F University College of Water Resources and Architectural Engineering Northwest A&F University Department of Crop and Soil Environmental Sciences Virginia Polytechnic Institute and State University Department of Agricultural & Biosystems Engineering Iowa State University

Rhizosphere aeration, irrigation with aerated water, and post-irrigation aeration would positively impact crop growth and yield. The objective of this study was to determine the effect of 4 post-irrigation aeration levels on plant growth, yield, irrigation-use efficiency （IUE）, and fruit market and nutritional quality of greenhouse cucumber under subsurface drip irrigation （SDI） and furrow irrigation （FI）. The post-irrigation aeration levels were 0.00, 0.50, 0.75, and 1.00 times half the estimated porosity of the plot rhizosphere. The experimental design was a two-faetor split-plot in randomized complete blocks with irrigation （FI and SDI） as the main treatments and 4 aeration levels as the sub-treatments. Ridge and furrow main plots （2.4 m ~ 2.4 m） with 4 ridges were replicated 5 times. Each of the 4 ridges （1.44 m2 in area） in the main plots was used as a sub-treatment plot. The results showed that post-irrigation aeration enhanced greenhouse cucumber plant growth, yield, IUE, and fruit market and nutritional quality. These parameters generally increased with increasing aeration levels under both FI and SDI. The aeration effect was generally higher under SDI than FI, and the IUE under SDI was almost twice that under FI. Further investigation would be required to elucidate the plant physiological mechanisms and soil processes responsible for the observed effects.

关键词： fruit quality furrow irrigation irrigation-use efficiency rhizosphere subsurface drip irrigation

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Impact of oxygation on soil respiration, yield and water use efficiency of three crop species

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Journal of Plant Ecology 2011年第4期4卷 236-248页

作者： Xinming Chen Jay Dhungel Surya P.Bhattarai Manouchehr Torabi Lance Pendergast David J.Midmore Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas Ministry of EducationNorthwest A&F UniversityYanglingShaanxi 712100China Centre for Plant and Water Science Faculty of ScienceEngineering and HealthCQUniversityRockhamptonQueensland 4702Australia

Oxygation refers to irrigation of crops with aerated water,through air injection using the venturi principle or the supply of hydrogen peroxide in the root zone,both using subsurface drip irrigation(SDI)*** improves water use efficiency(WUE),producing more yield and,and therefore,optimizes the use of drip and *** the efficiency of oxygation is quite possibly dependent on a number of *** primary objective of this study was,therefore,to quantify the effects of oxygation,emitter depths and soil type on crop root zone oxygen content,soil respiration,plant physiological response,biomass yield,quality and WUE of three crop *** This study investigated the potential of oxygation to enhance soil respiration,plant growth,yield and water use efficiencies(WUE)of cotton and wheat in experiments in enclosed heavy-duty concrete troughs(tubs)and pineapple and cotton in field *** treatments in tubs for wheat included comparisons between two soil types(vertisol and ferrosol)and superimposed were two oxygation methods(Mazzei air injector and Seair Diffusion System)compared to a control,and for cotton,emitters at two depths using Mazzei air injectors were compared to a *** field experiments compared Mazzei air injectors and a control for cotton in Emerald and pineapple in Yeppoon,both in central Queensland,*** findings In all experiments,soil oxygen content and soil respiration markedly increased in response to the oxygation *** O2 concentration in the crop root zone increased by 2.4–32.6%,for oxygation compared to control at the same *** soil respiration increased by 42–100%.The number of wheat ears,leaf dry weight and total dry matter were significantly greater in Mazzei and Seair oxygation compared to the *** biomass of wheat increased by 11 and 8%,and dry weight of wheat increased by 8 and 3%in Mazzei and Seair oxygation treatments compared to the control,***

关键词： oxygation subsurface drip irrigation soil respiration yield water use efficiencies

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Modeling of Different irrigation Methods for Maize Using AquaCrop Model: Case Study

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Engineering（科研） 2021年第8期13卷 472-492页

作者： Thamer Thamer Nadine Nassif Ayad Almaeini Nadhir Al-Ansari Diaa Hassan Ecole Doctorale en Sciences et Technologie Lebanese University Rafic Hariri Haddath Lebanon Faculty of Agronomy and Veterinary Sciences Environment and Natural Resources Department Lebanese University Dekwaneh Beirut Lebanon College of Agricultural Engineering Sciences Baghdad University Baghdad Iraq Department of Civil Environmental and Natural Resources Engineering University of Technology Lulea Sweden Water Resources Engineering College Al-Qasim Green University Babylon Iraq

Modeling of irrigation methods is one of the most important techniques that contribute to the future of modern agriculture. This will conserve water as water scarcity is a major threat for agriculture. In this study, AquaCrop model was used to model different irrigation methods of maize in field trails in Al-Yousifya, 15 km Southwest of Baghdad. Field experiments were conducted for two seasons during 2016 and 2017 using five irrigation methods including furrow, surface drip and subsurface drip with three patterns of emitter depth (10, 20 and 30 cm) irrigation. AquaCrop simulations of biomass, grain yield, harvest index and water productivity were validated using different statistical parameters under the natural conditions obtained in the study area. For 2016 and 2017 seasons, results of R2 were 0.98 and 0.99, 0.99 and 0.99, 0.99 and 0.97, and 0.8 and 0.73 for biomass, grain yield, harvest index and water productivity, respectively. The study has conducted that simulation using AquaCrop is considered very efficient tool for modeling of different irrigation applications for maize production under the existing conditions in the central region of Iraq.

关键词： AquaCrop Model Grain Yield Maize subsurface drip irrigation Water Productivity

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