摘要
为了评价痕量灌溉条件下水肥耦合处理对温室草莓产量、品质和水肥利用效率的影响,确定最优灌水施肥量.文中采用基于熵权-模糊层次分析法的综合评价指数为应变量、水肥用量为自变量建立预测模型,分析水肥对草莓的影响并计算痕灌条件下温室草莓最优灌水量和施肥量.结果表明:当灌水下限为60.41%、灌水上限为90%、施肥量为N:721.96kg/hm^2,P2O5:360.98kg/hm^2,K2O:721.96kg/hm^2时综合评价指数最大,此时产量为27008.69kg/hm^2,灌水利用效率为84.48kg/m^3,化肥利用效率15.60kg/kg.经优化后的痕量灌溉水肥管理模式增产27.26%,灌水利用效率提高22.27%,化肥利用效率提高26.35%.文中构建的预测模型具有较高的可靠性,提出最优水肥管理模式对于温室草莓生产具有指导意义.
A regression model of comprehensive indices evaluating yield,quality and water and fertili-zer utilization efficiency of winter strawberry under trace quantity irrigation condition was established in terms of water and fertilizer doses by using fuzzy analytic hierarchy process (FAHP) and entropy weight method.The water and fertilizer coupling effect on the yield,quality and water and fertilizer utilization efficiency was evaluated,and the optimal doses of water and fertilizer were determined.The results show that the maximum comprehensive evaluating index is achieved with the following fertilizer doses:721.96 kg/hm^2(N),360.98 kg/hm^2(P2O5) and 721.96 kg/hm^2(K2O) with 60.41% lower and 90% upper irrigation water limits.The corresponding yield,irrigation water utilization efficiency and fertilizer utilization efficiency are 27 008.69 kg/hm^2,84.48 kg/m^3 and 15.60 kg/kg,respectively.Compared with conventional drip irrigation mode,the optimized trace irrigation water and fertilizer management mode can increase the yield by 27.26%,the irrigation water utilization efficiency by 22.27% and the fertilizer utilization efficiency by 26.35%.The prediction model has a high reliability,and the optimized water and fertilizer doses predicted by the model can provide guidance on greenhouse strawberry production in a certain degree.
作者
邢立文
崔宁博
董娟
赵璐
刘双美
XING Liwen;CUI Ningbo;DONG Juan;ZHAO Lu;LIU Shuangmei(Shanxi Institute of Water Conservancy and Hydropower Sciences,Taiyuan,Shanxi 030002,China;College of Water Conservancy and Hydropower,Sichuan University,Chengdu,Sichuan 610065,China;Shanxi Institute of Biology,Taiyuan,Shanxi 030006,China;Sichuan Institute of Water Conservancy Sciences,Chengdu,Sichuan 610065,China)
出处
《排灌机械工程学报》
EI
CSCD
北大核心
2019年第9期815-821,共7页
Journal of Drainage and Irrigation Machinery Engineering
基金
山西省水利厅科外处科研项目(2017-006)
国家自然科学基金资助项目(51779161,51009101)
“十三五”国家重点研发计划项目(2016YFC0400206-03)
“十二五”国家科技支撑计划项目(2015BAD24B01-01)
关键词
熵权
模糊层次分析法
痕量灌溉
草莓
水肥耦合
回归拟合预测模型
entropy weight
FAHP
trace irrigation
strawberry
water and fertilizer coupling
regression fitting prediction model
作者简介
第一作者简介:邢立文(1989—),男,山西太原人,硕士(stwen028@gmail.com),主要从事水土资源环境研究;通信作者简介:崔宁博(1981-),男,陕西凤翔人,教授,博士生导师(cuiningbo@126.com),主要从事节水灌溉理论与技术研究.
