宁夏引黄灌区滴灌春小麦需水规律试验研究

来源 :中国农业工程学会农业水土工程专业委员会第八届学术研讨会 | 被引量 : 0次 | 上传用户:qq4156500
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通过宁夏引黄灌区的田间小麦滴灌试验,以地面灌溉为对照,研究了5组灌水下限处理滴灌春小麦的需水规律,并据此制定合理的灌溉制度.结果表明,滴灌条件下春小麦生育期日均耗水量呈单峰曲线,在拔节期和成熟期较小,抽穗期最大;作物系数与日均耗水量规律一致;滴灌处理千粒质量较地面灌溉处理大.春小麦苗期-拔节期、拔节-成熟期、成熟期灌水下限分别为80%FC、85%FC和70%FC时,有利于小麦积累产量;粉砂壤土地区灌水定额以30mm为宜.
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