摘要
针对冬季储水灌溉问题,对不同灌溉湿润层、不同灌前田面平整情况以及不同水流推进与消退条件下,冬季储水灌溉对来年灌溉定额的影响进行了试验观测。分析观测结果证明免耕覆盖具有提高土壤含水量、保持土壤水分的作用;对秋耕地进行耙磨与碾压处理具有减小田面糙率,提高水流推进速度与灌水均匀度的作用;对于保持灌水均匀度、提高灌水定额具有明显的作用。
An experimental observation on influence of winter storage irrigation on irrigation quota in next year under different wetting layer, different land leveling condition before irrigation and different water advance and recession condition was performed. The result proved that no-tillage ＆ mulch could enhance the soil moisture and conserve soil water, harrowing and milling of autumn farmland could minish roughness of farmland and enhance water advance velocity and irrigation uniformity.
出处
《节水灌溉》
北大核心
2005年第5期23-24,27,共3页
Water Saving Irrigation
基金
国家"十五"科技攻关计划-西部开发专项(2001BA901A42)
国家高技术研究发展计划("863"计划)(2002AA2Z4191)资助项目
关键词
储水灌溉
农艺措施
水分利用效率
灌溉定额
storage irrigation
agriculture measure
water use efficiency
irrigation quota
