Ecological draining and irrigating canal of farmland and construction method thereof

Abstract

The invention relates to an ecological draining and irrigating canal of a farmland. The ecological draining and irrigating canal of the farmland comprises an earthy canal and a water running system, wherein the surface layer of the earthy canal is an ecological layer which is formed by mixing earth with crop straws, local shrub and herbaceous plant straws and grass seeds and then compacting; the water running system comprises at least two construction pipelines which are vertical to the extending direction of the earthy canal, and the construction pipelines are pairwise oppositely arranged; one end of each construction pipeline exposes from an inner trough of the earthy canal, and the other end of each construction pipe is embedded into the earthy canal to be connected with the farmland; water valves are arranged at two ends of the construction pipelines; water outlets in two ends of the construction pipes are wrapped with filtering parts. According to the ecological draining and irrigating canal of the farmland, the purposes of adjusting the water balance of the farmland, transferring and storing rainwater and water drained from the farmland to achieve recycling, controlling nitrogen and phosphorus non-point source pollution of water drained in farmland irrigating, and increasing the biodiversity of an ecological system of the farmland can be achieved.

Description

technical field [0001] The invention relates to the field of farmland water conservancy and the technical field of ecological restoration and utilization, in particular to a farmland ecological drainage and irrigation ditch and a construction method thereof. Background technique [0002] China is a large agricultural country, and drainage and irrigation are the lifeblood and foundation of agricultural production. Drainage and irrigation are complementary farmland water conservancy technologies, which are responsible for maintaining suitable water conditions in farmland. In humid areas and semi-humid areas, due to excessive rainfall, excess water in farmland needs to be drained; in arid and semi-arid areas, water seepage from irrigation channels and deep field seepage will cause the groundwater table to rise, causing land salinization The groundwater level needs to be controlled, and the saline-alkali land needs to be washed and drained for improvement. The design concept o...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a farmland ecological irrigation and drainage ditch and its construction method, which are used to protect the water environment, improve the utilization rate of water and fertilizer, improve the water passing capacity of the ditch, prevent the ditch from being blocked, and solve the problem that the existing agricultural irrigation ditch is artificially hardened. , straight treatment, the exchange with the surrounding soil and water is blocked, and the water purification function is lost

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