Corrosion-resistant and beneficiating non-point source pollution control method for spring corn slope cropland

A non-point source pollution and control method technology, which is applied in the field of farmland non-point source pollution control, can solve problems such as water, soil, and fertilizer loss, aggravated farmland non-point source pollution, and poor soil corrosion resistance, so as to reduce surface runoff and improve soil quality. Effects of erosion resistance and soil fertility improvement

Active Publication Date: 2014-04-02
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0004] The present invention aims at the problems of poor soil erosion resistance of spring corn sloping farmland in purple soil, serious loss of water, soil and fertilizer under the action of heavy rain and seasonal drought, and the aggravation of farmland non-point source pollution caused by unreasonable fertilization technology at present, and provides a Non-point source pollution control method for anti-corrosion and efficiency enhancement of spring maize sloping cultivated land

Method used

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  • Corrosion-resistant and beneficiating non-point source pollution control method for spring corn slope cropland
  • Corrosion-resistant and beneficiating non-point source pollution control method for spring corn slope cropland
  • Corrosion-resistant and beneficiating non-point source pollution control method for spring corn slope cropland

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Experimental program
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Effect test

Embodiment 1

[0041] A piece of sloping farmland in XX Village, XX Town, XX County, XX Province, XX Province. The variety is Chengdan 30. The organic fertilizer is Lv’an brand commercial organic fertilizer. The slope of the sloping farmland is 4-6°. The management methods of anti-corrosion, synergistic efficiency and moisture conservation are as follows:

[0042] Step 1: Transplanting in narrow rows and film-covered at the same height. According to the 200cm open box, the average distance between the corn planting belts reserved for winter wheat is 100cm, and the row spacing of the corn planting belts is 50cm. One ditch is opened on the left and right sides of the reserved corn planting belt to form a W-shaped double-groove tile-backed bed, covered with soil Cover the film, punch holes in the tank with a plant spacing of 25cm and transplant corn seedlings, plant in staggered nests, and cover the nests with fine soil after planting. For details on the transplanted corn map, see figure 1 . ...

Embodiment 2

[0047] XX Town, XX County, XX Province, XX Provincial Academy of Agricultural Sciences runoff test field, the slope farmland slope is 10°, the variety is Chengdan 30, the soil is purple soil, and the planting mode is wheat / spring corn. The experiment has 3 treatments, namely :

[0048] Treatment (1): Slope farming + clear tillage + farmers' customary fertilization as a control, ordinary compound fertilizer pure nitrogen 5.0kg / mu, P 2 o 5 2.25kg / mu, k 2 O2.75kg / mu. The corn is transplanted along the slope, and after the winter wheat is harvested, it is laid out between the rows of the corn planting belt, and the weeds are frequently cultivated;

[0049] Treatment (2): Straw mulching + customary fertilization by farmers. Ordinary compound fertilizer pure nitrogen 5.0kg / mu, P 2 o 5 2.25kg / mu, k 2 O2.75kg / mu. Mulch with straw in the corn planting belt, fallow the winter wheat between the planting belts after harvest, and often intertill and weeding;

[0050] Treatment (3)...

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Abstract

The invention relates to a corrosion-resistant and beneficiating non-point source pollution control method for a spring corn slope cropland. The method comprises the following steps of isometry mulch laminating and transplanting of narrow rows, soil anti-corrosion conditioner applying of wide rows and one-time reasonable fertilization. Advantages of single technologies such as isometry mulch laminating of a slope, applying of a soil anti-corrosion conditioner and slow release fertilizer applying are integrated to overcome disadvantages, so loss of water, soil and nutrient is reduced and soil quality is improved. Isometry mulch laminating of a cross slope is combined with a high molecular chemical-physical conditioner and the synergism slow release fertilizer, and labor and capital investments are reduced. Compared with the traditional method in which only pure ridge culture of cross slopes, straw mulching and excessive fertilizer applying are adopted, the corrosion-resistant and beneficiating non-point source pollution control method for the spring corn slope cropland has the advantages of improving the water content by 5-9%, reducing soil bulk weight by 0.05-0.1g/cm<3> and reducing surface runoff by about 15%.

Description

technical field [0001] The invention relates to a non-point source pollution control method for spring corn sloping cultivated land with anti-corrosion and efficiency enhancement, in particular to a method for reducing non-point source pollution with anti-corrosion and efficiency enhancement for spring corn sloping cultivated land in purple soil regions, belonging to the field of farmland non-point source pollution control. Background technique [0002] Purple soil is one of the important cultivated soils in southern my country, and the purple soil slope farmland accounts for about 70% of the cultivated land area in the hilly area of ​​Sichuan. Corn is the main rain-fed and dry grain crop in Sichuan Province. In recent years, the sown area has been about 18 million mu, of which the intercropped spring maize sowed area accounts for more than 90% of the corn sown area. Due to the rapid physical weathering of the purple soil mother rock and weak corrosion resistance, the soil i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G1/00
CPCY02P60/20
Inventor 张晴雯陈尚洪刘定辉杨正礼张爱平
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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