A Study on Manners and Utilization of Rainfall Collection

WANG Zhi-jian

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A Study on Manners and Utilization of Rainfall Collection

- A Study on Manners and Utilization of Rainfall Collection
- Bulletin of Soiland Water Conservation Vol. 27, Issue 5, Pages: 176-179(2008)
- 作者机构：
  
  山西省水保生态建设中心,山西,太原,030002
- 作者简介：
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- Published：2008
- 稿件说明：
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WANG Zhi-jian. A Study on Manners and Utilization of Rainfall Collection[J]. Bulletin of Soiland Water Conservation, 2008, 27(5): 176-179.
DOI：

WANG Zhi-jian. A Study on Manners and Utilization of Rainfall Collection[J]. Bulletin of Soiland Water Conservation, 2008, 27(5): 176-179. DOI：

摘要

随着全球性干旱加剧与水资源问题的日益突出

雨水利用已成为世界范围内的一个课题。采取定位观测的方法

在山西省岚县香沟小流域研究集雨场的规划设计

地表处理技术

观测其集流量和集流效率

并对梯田作物有无补灌措施的生产效益进行对比试验研究。结果表明

集流量与降雨量和降雨强度之间是乘幂关系

降雨量越大

集流量越多;降雨强度越大

集流量也越多。水泥硬化小区的集流率较高;节水措施生产效益明显。雨水集流技术已成为解决水土流失和提高旱作农业生产力的一个结合点。

Abstract

With the intensification of the global shortage of water resources and drought

utilization of rain water has become a worldwide issue.In order to make a better study of the collection and utilization of rainfall so as to achieve the spatial and temporal redistribution of precipitation

the experiment adopted the method of fixed point observation and observed the outcomes by different surface processing techniques.It was found that the relation of the amount of collected rainfall to rainfall intensity was a power relationship

namely

the more the rainfall

the more the amount of collected rainfall was;and the greater the intensity of rainfall

the more the amount of collected rainfall was.The cement hardened area had a higher rate of collected rainfall with nearly zero content of silt

while the rate of collected rainfall on grassland was very low with a higher level of sediment.In fitting the curve of the relationship between the amount of collected rainfall and rainfall intensity like

it was found that with the increase in the ratio of the cement hardened area to the area of grassland

collection coefficient

increased

but rainfall index

and rainfall intensity index

decreased.In comparison of the effectiveness of the terrace crops that have or do not have irrigation measures

it is concluded that we should guide farmers to readjust industrial structure and plant economic crops for a higher economic efficiency.

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Related Author

SONG Ying-pa

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Related Institution

Institute of Subtropical Agriculture, Chinese Academy of Sciences

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