不同灌水次数对地下滴灌无膜移栽棉花生长发育和产量的影响

The Influence of Different Irrigation Water Times on Cotton Growth and Yield with Transplantion without Film Subsurface Drip Irrigation

地下滴灌技术是一种比较复杂节水灌溉方式,灌水量和灌水次数均是地下滴灌控制农作物生长的关键因素。本文主要通过小区试验分析了不同灌水次数对小、中和大定额灌溉处理的地下滴灌无膜移栽棉花生长发育和产量影响,结果表明:多次灌溉普遍有利于小、中、大定额灌溉处理地下滴灌棉花生长发育和产量的增加,尤其对3 900～4 500 m3/hm2的中等定额灌溉处理影响较大,在该灌溉定额下采用多次灌溉更利于促进棉花增产增收,期望对棉花开展高产高效节水栽培提供理论依据。

Subsurface drip irrigation technique is a relatively complicated water-saving irrigation method,irrigation water quantity and irrigation water time are important factors which control the growth of crops.This paper mainly analyzes the influence of different irrigation water times to small,medium and large quotas on cotton growth and yield with transplantation without film subsurface drip irrigation in Xinjiang acid areas by field experiment,the experiment results show that irrigation with many times are universally favorable to the cotton growth and yield increase of small,medium and large quotas with subsurface drip irrigation,particularly to the medium irrigation quota treatments（3 900～4 500 m3/hm2）,irrigation should be adopted with many times under this quota which is more favorable to the increase in the cotton yield.