Preparation method of high-efficiency agricultural water filtration system for sloping land

Abstract

The invention discloses a water filtration system formed by a header field, a vegetative filter strip and a filter pond, wherein the vegetative filter strip is arranged between the heater field and the filter pond and used for filtering rainfall runoff erosion sediments and nonpoint source pollutants; the filter tank is used for filtering straw sundries entering the vegetable filter strip; effluent of the filter pond is connected to a water storage device; the length of the vegetable filtering strip along the radial direction is 5-7m; the width is not smaller than 3m; the gradient is not greater than 1%. The vegetable filter strip adopts an energy forage switchgrass of which the planting coverage is over 80%, and the height of the energy forage switchgrass is greater than 30cm. Theoretical calculation and test detection prove that the maximal intercept effects of the vegetable filter strip on the total phosphorus and the sediment respectively achieve 93.6% and 98.62%, the maximal intercept effect on the chemical oxygen demand (COD) achieves 56%, and the intercept effect on the sediment and the pollutants is significant. If the water quality is further requested, the activated carbon or a medical stone layer can be added to the filter pond to improve the water quality. A clean water source is provided for high-efficiency agriculture, and an environmental economic cycle is achieved.

Description

technical field [0001] The invention belongs to the technical field of water saving, water storage and water conservation in agricultural production and ecological environment construction in arid areas, and specifically relates to a preparation method of a new high-efficiency agricultural water filtration system for sloping land. Background technique [0002] In order to solve the ecological environment construction in many areas of our country in the process of large-scale implementation of returning farmland to forest and grassland, facing prominent problems such as population increase, land resources shortage, food security, and water security, many places such as the Loess Plateau are developing high-efficiency agriculture on sloping land in order to Efficient use of water and land resources. However, to develop high-efficiency agriculture in the Loess Plateau region, it is necessary to solve the shortage of water sources caused by drought and soil erosion, the high sed...

AI Technical Summary

Problems solved by technology

However, to develop high-efficiency agriculture in the Loess Plateau region, it is necessary to solve the shortage of water sources caused by drought and soil erosion, the high sediment content of water sources caused by erosion of sediment, the high cost of using rainwater to use sedimentation tanks, low efficiency of sedimentation, complex dredging, and easy damage , difficulties in efficient use of water and sand, etc.

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