Ridging sowing method for improving corn yield of saline-alkali soils

A saline-alkaline land and corn technology, applied in the field of corn sowing in saline-alkaline land, can solve the problem of low corn yield, achieve the effects of increased corn yield, enhanced salt washing effect, and strong operability

Inactive Publication Date: 2013-02-13
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of low corn yield in the existing salin

Method used

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  • Ridging sowing method for improving corn yield of saline-alkali soils
  • Ridging sowing method for improving corn yield of saline-alkali soils

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specific Embodiment approach 1

[0007] Specific embodiment one: this embodiment is a kind of ridge sowing method that improves the yield of corn in saline-alkali land, specifically completes according to the following steps: 1. Deep tillage and ridging: carry out deep tillage and ridging on April 25th to April 30th, The depth of the furrow is 20cm~25cm, and the width of the furrow is 15cm~20cm; 2. Application of improver: after deep plowing and ridge formation, phosphogypsum is evenly spread in the furrow as a modifier, and the amount of phosphogypsum applied is 40 kg / mu~80 kg / mu, then cover soil, the cover soil thickness is 3cm ~ 5cm; Three, base fertilizer application: first the mixed base fertilizer obtained by mixing conventional corn base fertilizer and commercial organic fertilizer is evenly spread on the cover soil layer obtained in step 2, in the described mixed base fertilizer The application rate of conventional corn base fertilizer is 30 kg / mu~40 kg / mu, and the application rate of commercial orga...

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the conventional corn base fertilizer described in the step 3 is a special compound fertilizer for corn or a compound fertilizer mixed by urea, diammonium phosphate and potassium sulfate; If the corn special compound fertilizer is used as the conventional corn base fertilizer, the application rate of the corn special compound fertilizer is 30 kg / mu~40 kg / mu; if the compound fertilizer made of urea, diammonium phosphate and potassium sulfate is used as the conventional corn When the base fertilizer is used, the application rate of urea in the compound fertilizer is 10 kg / mu to 15 kg / mu, and the application rate of diammonium phosphate in the compound fertilizer is 8 kg / mu to 10 kg / mu. The application rate of potassium sulfate in the compound fertilizer is 6 kg / mu~8 kg / mu. Others are the same as the first embodiment.

[0014] N, P in the special compound fertilizer for corn de...

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Abstract

The invention provides a ridging sowing method for improving corn yield of saline-alkali soils, relates to a sowing method for saline-alkali soil corn and aims to solve the technical problem of low corn yield of the conventional saline-alkali soil corn sowing methods. The method comprises the following steps of (1) performing deep plowing ridging; (2) applying improver; (3) applying base fertilizer; (4) ridging; and (5) sowing. The method has the advantages that 1, ardealite used as an improver is applied to the bottom of the plowed layer and can effectively displace sodium ions in the plowed layer soil and flow below the plowed layer along with irrigation, so the accumulation of sodium ions in the soil on the plowed layer along the evaporation of water after irrigation is performed is avoided, and the salt-leaching effect of the irrigation is enhanced; and simultaneously, by the application of organic fertilizer, the content of organic matters in the soil is increased, the fertile plowed layer is cultured, and the fertilizer retention and the water retention of the soil are improved; and 2, the method is high in operability, easy to implement, less in consumption of the improver and low in cost and has quick effect and obvious yield-increasing effect of corn.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and in particular relates to a method for sowing corn in saline-alkali land. Background technique [0002] Corn (Zea mays L.) is the main cultivated crop in Northeast my country, and its planting area accounts for 30% of the national corn planting area. The western part of Northeast China is the concentrated distribution area of ​​soda saline-alkali soil in my country. The area of ​​saline-alkali cultivated land is 19.2 million mu, accounting for 6.8% of the total area of ​​cultivated land in the whole region. Soil salinization and low fertility level are an important factor that makes it difficult to increase maize yield in this area. The salinity of cultivated land soil in this area is mainly carbonate, the content of exchangeable sodium ions is high, and the pH is mostly between 7.5 and 8.5, which is weakly alkaline. Traditional corn planting mainly uses chemical fertilizers, due to...

Claims

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Application Information

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IPC IPC(8): A01C14/00
Inventor 黄立华王志春
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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