膜下滴灌水氮耦合对加工番茄耗水强度及氮素吸收分配的影响  

Effects of water and nitrogen coupling under film drip irrigation on the water consumption intensity and nitrogen uptake and distribution of processing tomatoes

作　　者：雷成霞[1] 李文昊 LEI Chengxia;LI Wenhao(Shanxi Conservancy Technical Institute,Yuncheng,Shanxi 044004,China;College of Water&Architectural Engineering/Xinjiang Production&Construction Group Key Laboratory of Modern Water-Saving Irrigation,Shihezi University,Shihezi,Xinjiang 832003,China)

机构地区：[1]山西水利职业技术学院,山西运城044004 [2]石河子大学水利建筑工程学院/现代节水灌溉兵团重点实验室,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2021年第1期54-61,共8页Journal of Shihezi University(Natural Science)

基　　金：国家重点研发计划项目(2017YFD0201506)。

摘　　要：为探究新疆地区膜下滴灌水氮耦合对加工番茄耗水强度及氮素吸收分配的影响,本文研究于2017―2018年在石河子大学节水灌溉试验站设置4个灌溉水平和3种施氮梯度的完全组合田间试验,分析不同水氮水平下土壤含水率、作物耗水和加工番茄各器官对氮素吸收分配的变化。结果表明:加工番茄耗水强度在不同水肥耦合作用下,均于果实膨大期达到最大值;加工番茄氮素累积整体先增加后减少,且叶片氮素累积要大于茎氮素累积,全氮累积量及全氮吸收速率均在果实膨大期达到最大值,此阶段应保障加工番茄的灌溉施肥,灌水量为3 938~4 500 m^(3)/hm^(2)、施氮量在225~300 kg/hm^(2)范围为较优的灌溉施肥方案。In order to explore the effect of nitrogen coupling under film drip irrigation on the water consumption intensity and nitrogen absorption and distribution of processing tomato in Xinjiang,in this paper,a complete combined field experiment of 4 irrigation levels and 3 nitrogen application gradients was set up in the water-saving irrigation experimental station of Shihezi University from 2017 to2018,and the soil moisture content,water consumption,the change of nitrogen uptake and distribution by processing organs under different water and nitrogen levels were analyzed. The results showed that the water consumption intensity of processing tomato reached the maximum value in the fruit expansion period under the coupling effect of different water and fertilizer;the nitrogen accumulation of processing tomato increased firstly and then decreased,and the nitrogen accumulation in leaf was greater than that in stem,the total nitrogen accumulation and absorption rate reached the maximum value in the fruit expansion period,so the irrigation and fertilization of processing tomato should be guaranteed at this stage,and the irrigation amount was 3 938 ~ 4 500 m^(3)/hm^(2) and 225 ~ 300 kg/hm^(2) were the best irrigation and fertilization schemes.

关 键 词：膜下滴灌 加工番茄 水肥耦合 耗水强度 氮素吸收 

分 类 号：S275.6[农业科学—农业水土工程]