Method of preventing and controlling regional farmland non-point source pollution by using farmland ditches and ponds system

A non-point source pollution, regional technology, applied in the application, agriculture, soil drainage and other directions, can solve the problem of lack of regional type, achieve the effect of strengthening the interception and purification capacity, reducing the loss of nitrogen and phosphorus, and realizing the effect of comprehensive prevention and control.

Active Publication Date: 2017-03-15
INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI +2
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  • Abstract
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  • 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 of preventing and controlling regional farmland non-point source pollution by using farmland ditches and ponds system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[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℃, and an annual precipitation of 745.00mm. The crops include rice, rape, garlic, and corn. And flue-cured tobacco. The per capita net income of farmers is 2933.00 yuan. The farmland area is about 4000 acres, including 27669 acres of woodland. The farmland drainage volume is about 1.2 million cubic meters. The annual discharge of nitrogen and phosphorus is about 4~4.8t and 0.2~0.24t. During the transition period of flood and drought (including the transition from dry land to paddy field) During the period and the transition period from paddy field to dry land) the concentration of d...

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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 using 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 flow and leaching during rainfall or irrigation in 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, etc., Sunan Taihu Lake Water System Agricultural Non-point Source Pollution and Its Control Countermeasures [J] Journal of Environmental Sciences, 17(1): 39~47 ). In recent years, with the continuous increase in the amount of fertilizers in the farmland ecosystem, the nitrogen ...

Claims

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Application Information

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Patent Type & Authority Patents(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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