北疆高产棉田水热平衡的初步研究  

Primary Study on Water and Heat Balance on High-Yield Cotton Field in North Xinjiang

作　　者：李银芳[1] 李盛湖[1] 张丙乾[1] 杨戈[1] 郭永平[1] 邢明亮 杨建武 刘忠元 段瑞萍 

机构地区：[1]中国科学院新疆生态与地理研究所,新疆乌鲁木齐830011 [2]新疆兵团农八师148团,新疆石河子832047

出　　处：《灌溉排水》2001年第4期15-17,共3页Irrigation and Drainage

基　　金：中科院"九五"特别支持项目 ( K2 95 T-0 7-0 2 ) ;中国科学院知识创新工程项目 ( KZCX1-0 8-0 1-0 1)

摘　　要：通过对高产棉田和普通棉田的生长状况、植物和土壤水分平衡与热量平衡的研究 ,提出在沙壤地的普通棉田 ,采用“轻灌勤灌”的灌溉方法 ,是改善棉田水热平衡 。Plant growth, water and heat balance in cotton field are investigated and analyzed. Research results indicated that higher transpiration rate and lower stomatal impedance are beneficial to water absorption and CO 2 metabolization. Plant temperature should be lower than ambient air temperature in order to avoid heat injury. Higher transpiration rate, lower stomatal impedance and the balance between water and heat are basal conditions for high yield in cotton. Frequent and insufficient irrigation are effective to improve the balance of water and heat in sandy soil.

关 键 词：水分平衡 热量平衡 轻灌勤灌 棉花 产量 产量构成因素 

分 类 号：S152.8[农业科学—土壤学]