Ecological draining and irrigating canal of farmland and construction method thereof

A construction method and ditch technology, applied in the field of farmland water conservancy, can solve the problems of soil and water exchange barrier, loss of water purification function, etc., and achieve the effect of reducing secondary pollution, increasing biodiversity, and reducing the occurrence of floods

A construction method and ditch technology, applied in the field of farmland water conservancy, can solve the problems of soil and water exchange barrier, loss of water purification function, etc., and achieve the effect of reducing secondary pollution, increasing biodiversity, and reducing the occurrence of floods

CN106400754AInactive Publication Date: 2017-02-15NANJING HYDRAULIC RES INST
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  • Ecological draining and irrigating canal of farmland and construction method thereof
  • Ecological draining and irrigating canal of farmland and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 1 , 2 As shown, a farmland ecological drainage and irrigation ditch, the ecological drainage and irrigation ditch includes a soil ditch 1 and a water-passing system 2, the surface layer of the soil ditch 1 is an ecological layer 3, and the ecological layer 3 is soil mixed with crop straw, local irrigation Grass stalks and grass seeds are compacted; the water passing system 2 is composed of at least two engineering pipelines 4 perpendicular to the extension direction of the soil ditch and arranged opposite to each other. One end of the engineering pipeline 4 is exposed in the inner groove of the soil ditch, and the other end is embedded The interior of the soil ditch is connected to the farmland; the two ends of the engineering pipeline 4 are respectively provided with water valves 5; the water outlets at both ends of the engineering pipeline 4 are coated with filter components 6; The gradient is 1 / 600; the cross-section of the soil ditch is trapezoidal; the...

Embodiment 2

[0036] like figure 1 , 2 As shown, a farmland ecological drainage and irrigation ditch, the ecological drainage and irrigation ditch includes a soil ditch 1 and a water-passing system 2, the surface layer of the soil ditch 1 is an ecological layer 3, and the ecological layer 3 is soil mixed with crop straw, local irrigation Grass stalks and grass seeds are compacted; the water passing system 2 is composed of at least two engineering pipes 4 perpendicular to the extension direction of the soil ditch and arranged opposite to each other. One end of the engineering pipes 4 is exposed in the inner groove of the soil ditch, and the other end The interior of the embedded soil ditch is connected to the farmland; the two ends of the engineering pipeline 4 are respectively provided with water valves 5; the water outlets at both ends of the engineering pipeline 4 are coated with filter components 6; the depth of the soil ditch is 80cm, and the bottom vertical The slope gradient is 1 / 700...

Embodiment 3

[0043] like figure 1 , 2As shown, a farmland ecological drainage and irrigation ditch, the ecological drainage and irrigation ditch includes a soil ditch 1 and a water-passing system 2, the surface layer of the soil ditch 1 is an ecological layer 3, and the ecological layer 3 is soil mixed with crop straw, local irrigation Grass stalks and grass seeds are compacted; the water passing system 2 is composed of at least two engineering pipes 4 perpendicular to the extension direction of the soil ditch and arranged opposite to each other. One end of the engineering pipes 4 is exposed in the inner groove of the soil ditch, and the other end The interior of the embedded soil ditch is connected to the farmland; the two ends of the engineering pipeline 4 are respectively provided with water valves 5; the water outlets at both ends of the engineering pipeline 4 are covered with filter components 6; The slope gradient is 1 / 900; the section type of the soil ditch adopts a parabolic secti...

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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...

Claims

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Application Information

Patent Timeline
15 Feb 2017
Publication
CN106400754A
IPC
E02B13/00; E02B11/00
CPC
E02B13/00; E02B11/00; E02B11/005
Inventors
王小军; 陈凤