摘要
为探究棉花灌水频次和灌溉定额对膜下滴灌棉花生长及产量的影响,进行了农艺性状监测、产量实测定实验。研究表明:在16、12、8次这3种灌水频次和4种灌溉定额(6 000、5 250、4 500、3 750 m3/hm2)的12种组合下,高灌水频次(16次)时小灌溉定额(4 500、3 750 m3/hm2)的水分生产率较高;低灌水频次(8次)时大灌溉定额(6 000、5 250 m3/hm2)水分生产率较高;但是在灌水频次一定时随着灌溉定额的增加水分生产率是逐渐降低的。表明灌水频次和灌溉定额对棉花生长和产量影响是显著的,南疆棉花膜下滴灌条件下高频次(12～16次)小灌溉定额(3 750～4 500 m3/hm2)时为宜。
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.
出处
《节水灌溉》
北大核心
2011年第3期29-32,38,共5页
Water Saving Irrigation
基金
国家高技术研究发展计划("863"计划)项目(2006AA100218)
新疆农业大学/教育部棉花工程研究中心
新疆农业大学校前期资助课题(XJAU200921)
新疆重大科技专项(20073117-1)联合资助
关键词
膜下滴灌
棉花
灌溉定额
drip irrigation under plastic film
cotton
irrigation ratio
