摘要
在甘肃省秦王川灌区开展了调亏灌溉条件下蚕豆耗水规律及其产量效应的试验研究。结果表明:重度缺水严重抑制蚕豆生长,使其叶面积变小,且这种抑制作用可持续较长时间,而轻度缺水几乎不影响蚕豆的生长;缺水不仅减少调亏期间的需水量,而且对后继生育阶段需水量也有影响;缺水不但能提高该时段的水分利用效率而且可以提高生育后期的水分利用效率;轻度缺水可提高蚕豆产量。
Based on field experiment, the effect of regulated deficit irrigation on water consumption and yield effect of broad bean were studied in Qinwangchuan irrigation region in order to saving water and obtain high yield. The result shows that severe water deficit in seeding and jointing seriously affect broad bean＇s growing. It made leaf area index and plant high decrease 26.00%, 21.36% ,38.62% ,34.78% and the influence continued a long time,but light water deficit in seeding and jointing hardly affects the growth of broad bean. High water deficit made water consumption decrease 47.97% and 46.58% in corresponding stage compared with CK. Deficit water can made water consumption increase 21.84%, 7.28%, 5. 34% and 2.43% in later period （mature period）. The WUE was increased 13.48% ,58.43% and 24.62% with deficit water in seeding and light deficit water in jointing but the WUE decreased 46.58% with high deficit water in jointing. Deficit water in early stage can increase the water consumption and WUE of later growth stage. Light water deficit had increased yield 9.09%and 14.05% but high water deficit decreased yield 1.65%% and 7.44% compared with CK.
出处
《水土保持研究》
CSCD
北大核心
2008年第2期189-191,194,共4页
Research of Soil and Water Conservation
基金
水利部科技成果重点推广项目(TG0614)
关键词
调亏灌溉
需水规律
产量
蚕豆
regulated deficit irrigation
water consumption
yield
broad bean
