水分调控对麦茬棉产量和水分利用效率的影响

被引:16
作者
申孝军
孙景生
张寄阳
高阳
王景雷
刘浩
机构
[1] 中国农业科学院农田灌溉研究所
基金
国家高技术研究发展计划(863计划);
关键词
棉花; 产量; 水分调控; 水分利用效率;
D O I
暂无
中图分类号
S562 [棉];
学科分类号
0901 ;
摘要
为研究麦后移栽棉对水分调控的响应,于2012年6月2012年10月通过人工控水试验研究了水分供应对麦后移栽棉生长、产量和品质的影响。小区试验结果表明,蕾期轻度水分亏缺花铃期充分灌水处理(T2)的籽棉产量、成铃数以及单铃质量均为最大,但蕾期和花铃期轻度水分胁迫处理(T4)的产量与处理T2差异不显著,但水分利用效率和灌溉水利用效率分别提高了23.93%和34.01%;管栽试验结果表明,对照处理(T7)的单株成铃数的收获籽棉产量均最高,与对照处理相比,全生育期轻度水分胁迫处理(T8)减产3.98%,水分利用效率和灌溉水利用效率分别提高了9.70%和20.02%;桶栽试验结果表明,灌水定额为1.6倍ETp处理(T11)的籽棉产量和单株成铃数均最高,与处理T11相比,灌水定额为1.3ETp处理(T12)的籽棉产量仅降低了9.7%,而灌水定额为1.0 ETp处理(T13)的籽棉产量降低了30%。说明适宜的水分胁迫(灌水下限为60%65%FC,灌水上限为80%85%FC)有利于麦后移栽棉的高产和水分利用效率的提高。
引用
收藏
页码:150 / 160
页数:11
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