摘要
1998～ 1 999年 ,研究了滴灌和地面灌二种灌水方式下 ,亏缺灌溉对棉花生长发育和产量的影响。试验结果表明 ,在亏缺灌溉条件下 ,花铃期干旱对棉花生长发育和产量影响最大。但随着亏缺灌溉程度由重到轻 ,即随着供水量的增加 ,棉花生长发育趋向良好 ,总耗水量和产量相应增加 ,二者均呈现出良好的直线关系 ;与地面灌相比 ,因滴灌是一种小定额灌溉 ,供水时段、水量分配较为均匀 ,又直接把水送至棉花根部 ,故灌水前后土壤湿度变幅小 ,棉花株高、果枝、蕾。
Effects of deficit irrigation on growth, development and yield in cotton under drip irrigation and border irrigation were studied in 1998～1999. It is shown that under deficit irrigation condition, drought at blooming bolling stage influences most seriously upon the growth, development and yield in cotton. With deficit level changing from severity to light (i.e. as the increase of water supply), the growth and development of cotton plants are improved obviously. Water consumption and lint yield increase linearly with water supply increase. Compared with border irrigation, drip irrigation is a small quota irrigation system with more uniform water supply interval and water distribution, and can transport directly water to plant root zone. Therefore, the growth and development of fruit branches, squares, bolls are better and leaf area index and lint yield are greater under drip irrigation than those under border irrigation.
出处
《灌溉排水》
CSCD
2000年第3期33-37,共5页
Irrigation and Drainage
基金
"九五"国家攻关项目! ( 96-0 0 6-0 2 -0 2 -2 )
关键词
棉花
亏缺灌溉
生长发育
产量
耗水量
cotton
deficit irrigation
border irrigation
drip irrigation
soil moisture
