摘要
对陇东黄土高原半湿润半干旱气候区旱地冬小麦生长期光、热、水三要素与产量进行了相关分析,得出对冬小麦产量起决定作用的农业气象要素为:孕穗—成熟期光照时数,≥0℃积温,开春土壤含水量+返青—孕穗期降水量(R2+3H)。建立了逐步回归方程,Y=-317.138+0.6317X1+0.4647X2。
This article analyzes the effects of sunlight, temperature and precipitation during different periods on the output of winter wheat in the Semi-humid and Semi-arid loess region of eastern Gansu. The result shows that the sunlight hours and ≥0℃ accumulated temperature during booting to mature stage, and the soil water content at early spring + the precipitation during reviving to booting stage (R2+3H) are the determinative agricultural climate factors to the output of winter wheat. Futhermore, the regression equation is set up.\;
出处
《干旱地区农业研究》
CSCD
北大核心
2004年第2期123-126,共4页
Agricultural Research in the Arid Areas
基金
甘肃省自然科学基金项目(YS981-A21-024)
