摘要
本文通过统计分析洛阳地区近３０年的降雨量，模拟洛阳地区不同的降雨年型，利用防雨旱棚研究旱地农田不同Ｎ、Ｐ、水配合对小麦产量影响。研究结果表明：在底墒水充足的情况下，Ｎ素对小麦产量影响最大，其次为Ｐ和水；Ｎ和水的交互作用对产量的影响＞Ｎ和Ｐ＞Ｐ和水；Ｐ肥、水分固定在高值还是低值，Ｎ肥对产量的影响规律基本上一致，Ｎ肥的最佳用量为３３０ｋｇ／ｈｍ２左右；Ｎ肥、水分固定在高值还是低值，Ｐ肥适宜时（２２５ｋｇ／ｈｍ２左右）产量最高，而且Ｐ肥过多或过少都使产量下降。
By statistical analysis of the 30 years rainfall of Luoyang,Henan Province,the different patterns of annual precipation were stimulated and the water proof sheld was used to study the effects of different compositions of N,P and water on the yield of winter wheat.The result of experiment showed that,under the condition of sufficient soil water (20%) before sowing supplied,the yield of winter wheat are significantly affected by N,and are less affected by P and water;the effect ability of interaction between two elements on yield of winter wheat are N and water>N and P>P and water;No metter what level the P and water,the effect low of N on the yield of winter wheat was similar,and no matter what level the N and water,the yield of winter wheat is the highest at the reasonable of P (225kg/hm 2).
出处
《植物营养与肥料学报》
CAS
CSCD
1999年第1期8-13,共6页
Journal of Plant Nutrition and Fertilizers
基金
"九五"国家旱农攻关项目
关键词
氮
磷
水
旱地
冬小麦
耦合效应
产量
Nitrogen\ Phosphorus\ Water\ Dryland\ Winter wheat
