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Method for improving soil fertility of saline-alkali soil

A technology for soil fertility and saline-alkali land, applied in the field of improving the soil fertility of saline-alkali land, can solve the problems of insufficient fertility of saline-alkali land, unsuitable for planting crops, low benefit of planting crops, etc., and achieve the effects of improving physical and chemical properties, improving cation exchange capacity, and reducing salinity

Inactive Publication Date: 2019-01-01
HUNAN HYBRID RICE RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is a method for improving the soil fertility of saline-alkali land, so as to realize the control of saline-alkali soil, thereby solving the problem of inappropriate planting of crops or low benefit of planting crops caused by insufficient fertility of saline-alkali land

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for improving soil fertility in saline-alkali land,

[0029] (1) Mix 0.6kg of cow dung starter, 200kg of bran, and 800kg of cow dung with a mixer according to the mass ratio of 1:19:80, adjust the moisture content to 51%, seal it with a plastic film, and pile it up for fermentation . After 2 days of accumulation and fermentation of cow dung, when the temperature rises to 55°C, turn it over once, and when the temperature rises to 60°C, turn it over again, and the fermentation is completed in 7 days, which is called cow dung organic fertilizer.

[0030] (2) Mix cow dung organic fertilizer, calcium sulfate, amino acid and ferrous sulfate according to the mass ratio of 5:2:2:1 to make a mixture, adjust the pH value to 4.5 by adding amino acid solution, and add The weight of the mixture is 46% of ammonium sulfate, 4% of potassium oxide and 46% of phosphorus pentoxide, and is made into an organic fertilizer for improving saline-alkali soil.

[0031] (3) Sprinkle th...

Embodiment 2

[0035] A method for improving soil fertility in saline-alkali land, is characterized in that: comprises the following steps:

[0036] (1) Mix 0.4kg of cow dung starter, 150kg of bran, and 750kg of fresh cow dung, mix them evenly with a mixer according to the ratio of mass ratio 1:19:80, adjust the moisture content to 55%, seal them with plastic film, and pile them together fermentation. After 2 days of accumulation and fermentation of cow dung, when the temperature rises to 55°C, turn it over once, and when the temperature rises to 60°C, turn it over again, and the fermentation is completed in 7 days, which is called cow dung organic fertilizer.

[0037] (2) Mix cow dung organic fertilizer, calcium sulfate, amino acid and ferrous sulfate according to the mass ratio of 5:2:2:1 to make a mixture, adjust the pH value to 4.2 by adding amino acid solution, and add The weight of the mixture is 45% of ammonium sulfate, 3% of potassium oxide and 45% of phosphorus pentoxide, and is ma...

Embodiment 3

[0042] A method for improving soil fertility in saline-alkali land, is characterized in that: comprises the following steps:

[0043] (1) Mix 0.5kg of cow dung starter, 230kg of bran, and 780kg of fresh cow dung, mix them evenly with a mixer according to the ratio of mass ratio 1:19:80, adjust the moisture content to 60%, seal them with plastic film, and stack them together fermentation. After 2 days of accumulation and fermentation of cow dung, when the temperature rises to 55°C, turn it over once, and when the temperature rises to 60°C, turn it over again, and the fermentation is completed in 7 days, which is called cow dung organic fertilizer.

[0044] (2) Mix cow dung organic fertilizer, calcium sulfate, amino acid and ferrous sulfate according to the mass ratio of 5:2:2:1 to make a mixture, adjust the pH value to 4.4 by adding amino acid solution, and add The weight of the mixture is 51% of ammonium sulfate, 5% of potassium oxide and 50% of phosphorus pentoxide, and is m...

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PUM

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Abstract

The invention discloses a method for improving the soil fertility of saline-alkali soil. The method comprises the following steps: (1) an organic fertilizer for improving saline-alkali soil are uniformly scattered into the saline-alkali soil, and then the soil is aired for at least two months, so that the organic fertilizer in the saline-alkali soil is fully dissolved; (2) seeds of salt-tolerant green manure plants such as alfalfa, sweet clover and the like are sown in the saline-alkali soil, wherein the sowing quantity is 2-3 kg per mu; (3) the sowing mode is strip sowing, the row spacing ranges from 15 cm to 20 cm, and the sowing depth ranges from 2 cm to 5 cm; and (4) cutting is not carried out in a first year, cutting is started in a second year, cutting is carried out in an initial flowering stage, cutting is carried out again after the cutting in the initial flowering stage is finished for 2 months, and the stubble height after cutting for the last time ranges from 6 cm to 7 cm,so that full overwintering is facilitated, wherein cutting is carried out for three times in a whole year, and the cutting time in a third year, a fourth year and a fifth year is the same as the cutting time in the second year. According to the invention, the biomass of crops planted in the saline-alkali soil is increased, the yield is improved, and the economic benefits of the unit area are improved to the largest extent.

Description

technical field [0001] The invention relates to a method for improving soil fertility, in particular to a method for improving soil fertility in saline-alkali land. Background technique [0002] For a long time, soil salinization has been a widespread soil problem in our country. Soil salinization widely exists in arid and semi-arid regions. According to the statistics of UNESCO, the area of ​​saline-alkali land in the world is more than 900 million hectares, which has become a factor restricting the development of agriculture and limiting the sustainable development of irrigated agriculture worldwide. As far as our country is concerned, saline-alkali land in our country has a large area, is widely distributed, and has various types, and it is distributed in the northwest, north and southeast coasts. According to reports, my country has 37 million hectares of saline-alkali land, 44 million hectares of residual salinization, and 17 million hectares of potential salinization...

Claims

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Application Information

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IPC IPC(8): A01B79/02C05G3/04C05G3/80
CPCA01B79/005A01B79/02C05B17/00C05G3/80C05C3/00C05C11/00C05D1/00C05D3/00C05D9/02C05F3/00C05F5/002C05F17/20
Inventor 齐绍武吴俊
Owner HUNAN HYBRID RICE RES CENT
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