灌溉排水学报2012，Vol.31Issue(3)：119-121,3.
苗期土壤水分控制对线辣椒生长和水分利用效率的影响
Effect of Soil Moisture Deficit at Capsicum（Capsicum annuum L.） Seedling Stage on Its Growth and Water Use Efficiency
摘要
Abstract
The lower limits of soil moisture are essential for efficient irrigation techniques in crop management.A pot experiment was conducted for capsicum to evaluate the effects of different soil moisture deficit（the lower limits being 70%,60%,55%,50%,45% and 40% of field capacity） during seedling period on the growth,fruit yield and water use efficiency（WUE） of the crop.The results showed that： ① the capsicum plants performed quiet well for the 60%,55%,50% and 45% treatments,but not in 70% and 40% treatments;② plant dry matter production was the greatest in the 50% treatment which also displayed the largest root / shoot ratio;③ fruit yield decreased with the lower limits of soil moisture changed from 50%,55%,60%,70%,45% to 40%;④ WUE decreased with the lower limits of soil moisture changed from 55%,50%,60%,70%,45% to 40%,which was similar to the case of fruit yield.We thus concluded that the optimal lower limit of soil moisture for capsicum during seedling stage was 45% to assure the plant growth as well as to maintain fruit yield.关键词
有限灌溉/土壤水分下线/根冠比/水分利用效率Key words
limited irrigation/lower limit of soil moisture/root shoot ratio/water use efficiency分类
农业科技引用本文复制引用
马甜,郭睿,范兴科,吴普特..苗期土壤水分控制对线辣椒生长和水分利用效率的影响[J].灌溉排水学报,2012,31(3):119-121,3.基金项目
中国科学院知识创新工程重要方向项目 （）
