棉花地下滴灌灌溉效应研究

Effect of Underground Drip Irrigation on Cotton

应用推广节水灌溉技术是缓解干旱区水资源紧缺矛盾的有效途径。地下滴灌是极为先进的节水灌溉技术。与膜下滴灌技术相比,减少了每年春季铺设连接,秋季回收管道和管件的繁琐工序。更加节水、省工,土地利用率、水分生产效率更高。棉花生育期提前,吐絮集中,通过对田间土壤水分变化过程和实际应用效果的监测分析,地下滴灌比膜下滴灌节水5.17%,增产5.12%;与常规地面灌相比,节水36.6%,增产45.63%,节水增产效果极为显著。

Spreading the technigue of applying drip irrigation with underground water is an effective way to alleviate the lack of water resources in arid zone. Compared with drip irrigation under plastic membrance, the underground drip irrigation technique can not only avoid fitting pipe in spring of every year and dismantling it in autumn and also can save more water and work force and increase the utilization rate of land and utilization ratio of water. During growing period of cotton, the underground drip irrigation makes mature period be ahead of time and shorten anthesis. By monitoring and analysing change and actual effect of soil water, we found that underground drip irrigation save water by 5.17% and increase production by 5.12% than drip irrigation of under plastic membrunce. Compared with routing irrigation,it saves water by 36.69% and increases production by 45.6%.