Rainwater collection and water-saving irrigation system and method used for upland sloping field

Abstract

The invention discloses a rainwater collection and water-saving irrigation system used for an upland sloping field. The system comprises a rainwater collection pond or weir, a high-position water storage reservoir, a plurality of low-position water storage reservoirs, a water pump and a water conveying pipe, wherein the rainwater collection pond or weir is arranged on the middle part or lower part of a valley; the high-position water storage reservoir is arranged on the upper part of a hill body with maximum height in each hill body close to the rainwater collection pond or weir; the plurality of low-position water storage reservoirs are arranged on each hill body at the periphery of the high-position water storage reservoir respectively and are lower than the high-position water storage reservoir; the water pump is arranged beside the rainwater collection pond or weir; a water inlet of the water pump is connected with the rainwater collection pond or weir, and a water outlet of the water pump is connected with the high-position water storage reservoir; and the water conveying pipe is laid between the high-position water storage reservoir and each low-position water storage reservoir. By using the rainwater collection and water-saving irrigation system, surface runoff water produced by rainwater is accumulated in the rainwater collection pond or weir, water in the rainwater collection pond or weir is lifted to the high-position water storage reservoir by the water pump, water of the high-position water storage reservoir is conveyed to each low-position water storage reservoir through the water conveying pipe respectively, and water accumulated in each low-position water storage reservoir is used for irrigation when the irrigation is needed.

Description

technical field [0001] The invention belongs to the technical field of farmland water conservancy, and in particular relates to a rain-collecting and saving-irrigation system and a rain-collecting and saving-irrigation method for hilly slopes. Background technique [0002] A hill is a terrain with a difference in height between plains and mountains. Generally, it refers to the terrain with an altitude above 200m and below 500m, and the relative height generally does not exceed 200m. It is undulating, cut and broken, and consists of continuous low hills. Hills are widely distributed on land, and are generally distributed in the transition zone between mountains or plateaus and plains. The number of hills in my country is about 1 million km 2 , accounting for one-tenth of the total area of ​​the country. [0003] The hills in central Sichuan in my country's Sichuan are the most typical Fangshan hilly areas in China, with an area of ​​about 84,000 km 2 , is the main producti...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a rain-collecting and saving-irrigation system and a rain-collecting and saving-irrigation method suitable for hilly slope cultivated land, so as to solve the problems caused by abundant rainfall in hilly areas but uneven temporal and spatial distribution. seasonal drought issues and improve irrigation water use efficiency

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