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Method for preventing and treating regional farmland non-point source pollution through farmland ditch and pond system

A regional, farmland technology, applied in application, agriculture, soil drainage, etc., can solve problems such as lack of regional type, and achieve the effect of strengthening interception and purification capabilities, optimizing construction, and improving recycling capabilities.

Active Publication Date: 2015-04-01
INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These existing methods lack regional, holistic consideration of the overall water balance (storage) of the farmland system, etc.

Method used

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  • Method for preventing and treating regional farmland non-point source pollution through farmland ditch and pond system

Examples

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Effect test

Embodiment 1

[0021] Example 1: Shangsi, Fengyu Town, Eryuan County, Yunnan Province imitated a regional farmland non-point source pollution project by using the farmland ditches and ponds system

[0022] Shangsi Natural Village, Fengyu Town, Eryuan County, Yunnan Province is located in the west of Fengyu River Basin, 5.50 kilometers away from Fengyu Town, with an altitude of 2210m, an annual average temperature of 13.70°C, and an annual rainfall of 745.00mm. The crops are rice, rape, garlic, and corn. and flue-cured tobacco etc. The per capita net income of farmers is 2933.00 yuan. The area of ​​farmland is about 4,000 mu, with 27,669 mu of forest land, the drainage of farmland is about 1.2 million cubic meters, and the annual discharge of nitrogen and phosphorus load is about 4-4.8t and 0.2-0.24t. period and the transition period from paddy field to dry land) the concentration of tail water is the highest, which is 10-20 times that of other periods, and the discharge load is more than 70...

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Abstract

The invention provides a method for preventing and treating regional farmland non-point source pollution through a farmland ditch and pond system. According to the method for preventing and treating the regional farmland non-point source pollution through the farmland ditch and pond system, an ecological pond is added to a farmland irrigation and drainage ditch based on arrangement and improvement of the farmland irrigation and drainage ditch according to a farmland surface runoff confluence track, the water flow speed of the farmland ditch is rapidly slowed down, the buffering capacity of a farmland system against water is reinforced, the cycle efficiency of farmland interior water sources and nitrogen and phosphorus nutrients is improved, the farmland non-point source sewage discharge is reduced, farmland nitrogen and phosphorus pollutant discharge is effectively cut down, and the method plays a greater role in protecting regional water environment.

Description

technical field [0001] The invention relates to the technical field of agricultural environmental protection, in particular to a method for preventing and controlling regional farmland non-point source pollution by utilizing farmland ditches and pond systems. Background technique [0002] Farmland non-point source pollution refers to the non-point source pollution formed by nitrogen and phosphorus nutrients entering water bodies through farmland surface runoff, soil inflow and leaching during rainfall or irrigation during agricultural production activities. Studies have shown that the loss of nitrogen and phosphorus in farmland is mainly through surface runoff into the receiving water body (Ma Lishan, Wang Zuqiang et al. Agricultural non-point source pollution and control measures in the Taihu Lake system in southern Jiangsu [J] Journal of Environmental Science, 17(1): 39-47 ). In recent years, with the continuous increase in the amount of chemical fertilizers in farmland e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B13/00E02B11/00
CPCE02B11/00E02B13/00
Inventor 胡万里刘宏斌刘申付斌段宗颜翟丽梅陈安强金桂梅李文超陈拾华雷秋良鲁耀杜彩艳刘保军
Owner INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI
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