2011•Jieshui guan'gaiRequires access
Effects of Irrigation Frequency and Quota on Cotton Growth and Yield with Drip Irrigation under Plastic Film
Ma Liang
Open publisher page 0 citations
Abstract
To study the effects of irrigation frequency and quota on cotton growth and yield with drip irrigation under plastic film,agronomic characteristics and real yield was monitored.The study results showed that under 12 patterns,combined by 3 kinds of irrigation frequency,namely 16 times,12 times,8 times,and 4 kinds of irrigation quota,namely 6 000,5 250,4 500 m3/hm2,3 750 m3/hm2,the water productivity efficiency of the pattern with high irrigation frequency of 16 times and low irrigation quota of 4 500,3 750 m3/hm2 was higher,so was the pattern with low irrigation frequency of 8 times and high irrigation quota of 6 000,5 250 m3/hm2.The water productivity efficiency was gradually decreased with the increased irrigation ratio under the same irrigation frequency.So the effects of irrigation frequency and quota on cotton growth and yield were obvious.The pattern with high irrigation frequency of 16 to12 times and low irrigation quota of 4 500 m3/hm2 to 3 750 m3/hm2 was suitable with drip irrigation under plastic film in Southern Xinjiang.