摘要
在分析陕北、渭北地区旱地冬小麦生育期水分盈亏量和不同月份降水自给率地区分异的基础上 ,研究了不同分区典型县旱地降水产量积分回归函数和降水对产量的影响规律 ,确定了陕西丘陵沟壑区和渭北台塬东部冬小麦最佳补充灌溉时期为 :冬前分蘖期和返青、拔节期 ;洛川塬区 :返青、拔节期 ;渭北台塬西部
Based on the analysis of regional features of soil moisture deficit and rainfall distribution with different months of winter wheat growing season in North Shaanxi and Weibei areas,the winter wheat rainfall production integration correction function of typical counties and the effect of rainfall on winter wheat production in different districts are studied.It is concluded that the optimal compensation irrigation period is tillering before winter and reviving jointing stage in the north of Shaanxi hilly area and the east part of Weibei loess tableland,reviving and jointing stage in Luochuan highland,and over wintering stage in the west part of Weibei loess tableland.
出处
《西北农业大学学报》
CSCD
北大核心
2000年第4期5-10,共6页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
国家自然科学基金资助项目! ( 49871 0 4 0 )
陕西省科技攻关项目 !( 98K0 3 -G4 )
关键词
冬小麦
降水-产量关系
补灌时期
陕西
winter wheat
compensation irrigation
relationship of production with rainfall
North Shaanxi
Weibei
