不同氮素水平下孕穗开花期土壤水分对冬小麦产量效应的研究  

Effects of soil moisture on yield of winter wheat in South China under different nitrogenous fertilizers

作　　者：张凤翔[1] 周明耀[1] 郭文善[2] 

机构地区：[1]扬州大学水利科学与工程学院,扬州225009 [2]扬州大学农学院,扬州225009

出　　处：《农业工程学报》2006年第7期52-55,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：江苏省水利科技重点项目(2002014);江苏省水利动力工程重点实验室开放课题(2003028)

摘　　要：为了探讨冬小麦水肥交互效应，于2004-2005年在南方雨水较多地区开展了不同施氮量条件下孕穗开花期控水对冬小麦产量效应的盆栽试验研究。结果表明：在该试验条件下氮肥对产量的作用最大，土壤水分次之；水氮配合的产量效应是：适宜土壤水分高施氮量效应最高，高土壤水分高施氮量次之，低土壤水分低施氮量最低；水氮交互效应大小顺序是：水氮耦合〉施氮量〉土壤水分。获得最高籽粒产量86．6g／盆的土壤含水量为占干土重的19．0％、施氮量为2．6g／盆。To seek for mutual effects of water and fertilizer on winter wheat, pot experiments were conducted in south China, where there is adequate rain, during 2004-2005 to study effects of soil moisture on winter wheat yield under different nitrogenous fertilizers. Results show that nitrogen fertilizer was the chief factor to affect winter wheat yield and soil moisture was the second factor. Yield effect was the highest in the condition of suitable soil moisture and high nitrogen fertilizer, but that was the lowest in low soil moisture and low nitrogen fertilizer, and that was between the two in high soil moisture and high nitrogen. The effect order of interaction was. nitrogen and water coupling〉nitrogen〉soil moisture. Amounts for highest yield 86.6 g/pot were nitrogen 2.6 g/pot and soil moisture 19.0%.

关 键 词：冬小麦 数学模型 产量效应 组合方案 

分 类 号：S152.75[农业科学—土壤学] S512.11[农业科学—农业基础科学]