摘要
采用田间小区实验 ,通过对玉米不同生育期、不同土壤水分条件下叶水势、气孔导度、光合作用、植株蒸腾、生理生态状况及产量形成的观测试验 ,并在总结已有成果的基础上 ,分析研究了玉米不同生育阶段的水分胁迫指标阈值 ,提出了玉米不同生育阶段的水分胁迫指标 ,为节水灌溉与灌溉管理提供了科学、实用的依据。
Field experiments are conducted to study the relationships among leaf water potential, soil water potential, stomatal resistance, photosynthesis rate, transpiration rate, and water requirement, yield and some other physiological and ecological appearances in various growing stage in corn. By analyzing investigated experimental data, the critical values for irrigation in several growing stages of corn are determined and presented in this paper.
出处
《灌溉排水》
CSCD
北大核心
2001年第4期18-20,共3页
Irrigation and Drainage
基金
国家"九五"攻关项目 ( 96 0 0 6 0 2 0 2)
关键词
水分胁迫
叶水势
土水势
阈值
玉米
生育期
water stress
index
leaf potential
soil potential
critical value
