摘要
为充分利用雨水资源,发展生态农业,讨论在我国湿润地区发展温室棚面集雨技术,通过试验测试了集雨量,分析了集雨量与作物需水量的耦合性。试验结果表明,棚面平均径流系数fmk达0.898 9;三茬种植,全年集雨量与需水量相差500 mm,两茬种植,集雨量基本满足需水量。
To fully utilize rainwater resources and develop eco-agriculture, the technique of water harvesting by cover of greenhouse in humidity area was studied. In this paper, the water harvesting quantity is measured and the coupling between it and the water requirement of crops is analyzed. The experimental result shows that average runoff coefficient of cover reaches 0. 898 9. Under the condition of three batches planting one year, the discrepancy between all-year water harvesting quantity and the water requirement is 500 mm, while there is no discrepancy under the condition of two batches planting one year.
出处
《节水灌溉》
北大核心
2008年第6期18-20,共3页
Water Saving Irrigation
关键词
温室
集雨
耦合
作物需水量
greenhouse
water harvesting
coupling
water requirement of crops
