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Method of controlling agricultural non-point source pollution of black-soil water source regions of northeast China by grass belts

A technology for agricultural non-point source pollution and water source, applied in the field of environmental protection, can solve problems such as sharp reduction in river flow and cut-off, and achieve the effects of improving soil quality, being easy to popularize, and enhancing biodiversity.

Inactive Publication Date: 2015-02-18
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of sharp reduction or cut-off of river flow caused by existing prevention and control measures, and provides a method for controlling agricultural non-point source pollution of water sources in black soil areas in Northeast China by using grass strips

Method used

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  • Method of controlling agricultural non-point source pollution of black-soil water source regions of northeast China by grass belts
  • Method of controlling agricultural non-point source pollution of black-soil water source regions of northeast China by grass belts
  • Method of controlling agricultural non-point source pollution of black-soil water source regions of northeast China by grass belts

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specific Embodiment approach 1

[0019] Specific implementation mode one: the method for utilizing the grass belt of the present embodiment to control the agricultural non-point source pollution in the black soil area of ​​Northeast China is realized according to the following steps:

[0020] 1. Use the existing roads in the farmland to lay out the grass belt along the contour line; wherein, the grass belt must be continuous in the same plot;

[0021] 2. Adjust the grass strip layout spacing and width according to the main slope change of the cultivated land in the black soil area; wherein, the main slope change range of the cultivated land in the black soil area is 0-8°;

[0022] 3. Select forage varieties suitable for the cold climate in Northeast China to build a grass belt, sow at the same time as the crops, increase the planting density, and use organic fertilizer as the base fertilizer;

[0023] 4. Cover the straw bag when sowing;

[0024] 5. Grass belt planting can only be harvested once in the year, ...

specific Embodiment approach 2

[0031] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: the adjustment of the grass belt layout spacing and width described in step two is specifically: (1) the grass belt layout spacing of 0~3° slope cultivated land is 20m, and the width is 20m. 1m; (2) 3-5° sloping farmland grass strips are arranged at a spacing of 10m and a width of 0.5m; (3) 5-8° sloping farmland grass strips are laid at a spacing of 10m and a width of 1m. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the forage variety described in step 3 is alfalfa. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to the technical field of environmental protection, in particular to a method of controlling agricultural non-point source pollution of black-soil water source regions of northeast China by grass belts, and solves the problems of sharp decline or cutoff of river flow caused by the existing control measures. The method includes: firstly, distributing grass belts along contour lines by existing roads among fields; secondly, adjusting arrangement spacing and width of the grass belts according to major slope changes of black-soil region lands; thirdly, selecting forage grasses suitable for the cold weather of northeast regions to form the grass belts, sowing agricultural crops with the grass belts to increase planting density, and applying organic fertilizer as base fertilizer; fourthly, covering with grass bags during sowing; and fifthly, harvesting once in the year of grass belt planting, and clipping for three times in the next year at intervals of about 40 days. The method is applicable to the field of agricultural non-point source pollution.

Description

technical field [0001] The invention relates to a method in the technical field of environmental protection, in particular to a method for controlling agricultural non-point source pollution of water source areas in black soil areas in Northeast China by using grass strips. Background technique [0002] The Northeast black soil area is an important core grain production area and the largest commercial grain production base in China. Due to the extensive reclamation of slope land, soil erosion has increased year by year, directly causing a large amount of nitrogen and phosphorus to enter the river, which in turn caused serious agricultural non-point source pollution. Although the existing prevention and control measures have played a certain role, most of the measures overemphasize the dual benefits of "interception and sediment reduction", resulting in a sharp decrease or interruption of river flow, which affects the water ecology of downstream rivers and lakes, especially in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
Inventor 欧洋阎百兴王莉霞隋媛媛
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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