太行山前平原区作物—水分模型  

Model of crops response to water in the piedmont of MT.Taihang

作　　者：孙振山[1] 刘昌明[2] 张喜英[1] 陈素英[1] 

机构地区：[1]中国科学院石家庄农业现代化研究所 [2]中国科学院地理科学与资源研究所,北京100101

出　　处：《干旱地区农业研究》2006年第1期154-157,共4页Agricultural Research in the Arid Areas

基　　金：国家粮食丰产科技工程(2004BA520A07)

摘　　要：依据田间试验数据,采用Jensen模型,研究了太行山前平原区冬小麦、夏玉米的作物—水分模型。结果表明,小麦在拔节期缺水敏感指数(iλ)最大,对缺水最为敏感;其次是孕穗至灌浆前期;而返青起身期间和灌浆后期iλ是负值,在这些生育期适当控制水分供应对产量更有利。对于夏玉米,每个生育期iλ均为正值,说明玉米任何生育期的水分亏缺最终均会对产量产生影响,特别是抽雄至灌浆前期,是对水分最敏感的时期。By using Jensen model, this paper studies the crop-water model of winter wheat and maize according to the experimental data in the field. The results show that the water-stress sensitivity index （λi） of winter wheat is the largest in jointing stage, the next are booting and heading to early filling stages, while λi is negative during turning green to lifting and late filling stages, during which the proper control of water supply is beneficial to the yield of winter wheat. As to maize, the water-stress sensitivity index （λi） is positive in every stages, showing that water stress in any stage can affect the yield of maize; The most sensitive stage of maize to water stress is heading to initial filling stage. The paper may provide important theoretical evidences for establishing water-saving and high-efficiency irrigation system in the piedmont of MT. Taihang.

关 键 词：作物-水分模型 水分敏感性 冬小麦 夏玉米 华北平原 

分 类 号：S152.7[农业科学—土壤学]