Dry land soil infiltration system and method for agricultural non-point source pollution control

Abstract

The invention provides a dry land soil infiltration system for agricultural non-point source pollution control. The method comprises a dry land, a gate, a hoisting shaft, a high level cistern and a circulating irrigation system; the gate is arranged in a dry land drainage ditch, rainfall runoff is collected into the hoisting shaft and is lifted to the high level cistern to be stored by using a water pump, collected rainwater is circularly irrigated to the dry land by using a water pump during a water shortage period, so that the purposes of reducing the dry land system non-point source pollution excretion, improving the water resource and fertilizer utilization efficiency and achieving water-saving irrigation are achieved; the dry land serves as a natural soil infiltration system, the rainwater in the ditch is purified, thereby replenishing groundwater resources. The invention further relates to a dry land soil infiltration method for the agricultural non-point source pollution control. The method has the advantages that the dry land source non-point pollution is controlled, the rainfall runoff can be reduced by 30% or above, the non-point source pollution is reduced by 30-50%, theconstruction is convenient, and the cost is low.

Description

technical field [0001] The invention belongs to a system related to the technical field of agricultural non-point source pollution control, and in particular relates to a dry land soil infiltration system and method which are beneficial to the prevention and control of agricultural non-point source pollution and water-saving irrigation. Background technique [0002] With the effective control of point source pollution such as industrial wastewater and urban domestic sewage, agricultural non-point source pollution has gradually become the most important source of water environment pollution. Agricultural non-point source pollution is affected by multiple factors such as topography, underlying surface conditions, agricultural activities, hydrometeorology, etc., and has the characteristics of concealment, dispersion, and large area and volume, which leads to the monitoring and control of agricultural non-point source pollution Treatment is relatively difficult, and the environm...

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Problems solved by technology

[0006] The above patents are all aimed at controlling the migration of non-point source pollutants, using farmland ditches or external projects to treat farmland tail water, and not making full use of the pollutant purification potential of dryland farmland itself

[0007] In further searches, no technical reports have been found to simultaneously achieve non-point source pollution control and improve water resource and fertilizer use efficiency under the premise of ensuring agricultural production

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