| 集雨节灌旱地春小麦最佳补灌时期的研究 |
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| 引用本文： | 张源沛,张益明.集雨节灌旱地春小麦最佳补灌时期的研究[J].灌溉排水学报,2002,21(2):44-46. |
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| 作者姓名： | 张源沛 张益明 |
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| 作者单位： | 宁夏农科院,土肥所,宁夏,银川,750002 |
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| 基金项目： | 国家“九五”攻关项目 (960 10 2 ) |
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| 摘 要： | 在宁夏南部半干旱地区 ,对春小麦不同时期灌水对小麦产量及水分利用效应进行了研究 ,得出覆膜春小麦不同生育期灌水 3 0 mm,与不灌水相比 ,均有增产效果。其中在拔节期灌水 3 0 mm产量可增加 3 71 .1kg/hm2 ,水分利用率提高 1 1 .2 %。考虑降雨分布等因素 ,认为拔节期是地膜春小麦集雨节灌最佳补水时期
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| 关 键 词： | 半干旱地区 春小麦 水分利用率 |
| 文章编号： | 1000-646X(2002)02-0044-03 |
| 修稿时间： | 2001年12月20 |
Study on the Optimal Water Supplement Period in Spring Wheat in Arid Rainfall Harvesting Areas |
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| ZHANG Yuan pei,ZHANG Yi ming.Study on the Optimal Water Supplement Period in Spring Wheat in Arid Rainfall Harvesting Areas[J].Journal of Irrigation and Drainage,2002,21(2):44-46. |
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| Authors: | ZHANG Yuan pei ZHANG Yi ming |
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| Abstract: | Compared with no irrigation fields, 30 mm of water supplement at any growth stage will improve yield in spring wheat mulched with plastic film. With 30 mm of water supplement in elongation stage, the yield raises by 371.1 kg/hm 2, and water use efficiency raises by 11.2%. With considering precipitation distribution, the elongation stage is considered as the optimal water supplement period in spring wheat mulched with plastic film in arid rainfall harvest areas. |
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| Keywords: | rainfall harvesting spring wheat water use efficiency |
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