摘要
试验采用通用旋转组合设计，模拟研究了冬小麦产量与降水量、施氮量及施磷量的关系。结果表明：在雨养农业区，冬小麦产量主要受降水量限制，施氮量对产量影响较大，施磷量影响较小。模拟研究得出本试验设计范围内，冬小麦最高产量为５６００．５ｋｇ／ｈｍ２，此时需降水为６００ｍｍ，最佳施纯氮量为１５０ｋｇ／ｈｍ２，施纯磷量为１０３．８ｋｇ／ｈｍ２；模拟还得出在不同降水情况时，获得冬小麦最高产量所需的最佳施肥量以及降水量与施氮量的互作效应关系。
The universal rotationary
combination design was employed to study thesimulation of the relationships among winter
wheat yields ,rainfall and amount of N andP fertilizer applied. The results showed that in
rainfed agricultural area ,winter wheatyields are mainly constrained by rainfall,and the amount
of N fertilizer applied cangreatly affect winter wheat yields,but the amount of P fertilizer applied
may sightly im-pact the yields.It can be obtained from the simulation study that within the range
of ex-periment design,the highest yield of winter wheat is 5600.5kg/hm2,and in this
case,600mm of rainfall is needed.The optimal application of pure N can be 150 kg/hm2,andpure
P will be 103.8 kg/hm2. Therefore,in the case of different rainfall the interrela-tionships among
the optimal fertilization,rainfall and N application for the highest yieldsof winter wheat are
obtained through the simulation research.
出处
《干旱地区农业研究》
CSCD
北大核心
1994年第3期69-73,共5页
Agricultural Research in the Arid Areas
基金
国家自然科学基金
关键词
旱地
冬小麦
降水量
施肥量
rainfed land
winter wheat
rainfall
amount
of fertilization
