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A step-by-step approach to reducing excess soil nitrate and sulfate accumulation

A nitrate and sulfate technology, which is applied in the fields of soil preparation, agricultural gas emission reduction, agricultural machinery and implements, etc., can solve the problems of increasing the infiltration rate of soil water, nitrate leaching, slow degradation, and easy water loss, etc. Achieve the effect of reducing nitrate leaching loss, reducing evaporation loss and avoiding nitrate leaching loss

Active Publication Date: 2021-11-05
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biodegradation of straw carbon sources is relatively slow. Adding straw to the soil when the crushing is poor can increase the content of soil organic matter, but it may increase the infiltration rate of soil water and increase the leaching o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] To be treated: a large-scale soil long-term rotation of long-term tomatoes and short raw letters, 9 years later, soil secondary salinization is severe, 0-40cm soil nitrate and sulfate at the end of winter and spring rice nitrate and sulfate have reached 1.13, respectively g / kg and 0.72 g / kg.

[0024] It is now desirable to reduce the soil nitrate and sulfate content to 0.40 and 0.50 g / kg, respectively, for this purpose, according to the following order:

[0025] 1) After the winter and spring tomato strike park, the shed, flip 0-40cm soil, and the soil humidity is reduced to 13.1%;

[0026] 2) Schillean sugar (0.19kg / s) and corn flour (0.38kg / s), 0-40 cm soil to cut 0.5 times and 1x, respectively.

[0027] 3) After the above requirements, the carbon source is even easily joined and then turned to the ground, and the soil is placed.

[0028] 4) Filling the above-mentioned flat compacted soil, adding water to the water content of 0-40cm soil moist...

Example Embodiment

[0034] Example 2

[0035] To be treated: a large shed soil long-term rotation of long-term cucumber and short-stranded vegetables, 8 years later, soil secondary salinity is heavier, and the average content of the soil nitrate and sulfate in winter and spring tomatoes is achieved. 0.92 g / kg and 0.67 g / kg.

[0036] It is now desirable to reduce the soil nitrate content and the sulfate content to 0.40 and 0.50 g / kg, respectively, for this purpose, according to the following order:

[0037] 1) After the winter and spring cucumber strike park, the shed, flip 0-40cm soil, soil moisture is reduced to 12.5%;

[0038] 2) Sprinkling in the soil surface (0.081kg / square meter) and corn flour (0.405 kg / s), 0.3 times and 1.5 times the nitrate mass (0.27 kg / s) of 0-40cm soil;

[0039] 3) After the above requirements, the carbon source is evenly sucked soil and then flip the sum of the soil;

[0040] 4) Filling the above-mentioned flat compacted soil, adding water, soil moisture conte...

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Abstract

The invention relates to the field of soil degradation and restoration, and specifically provides a method for reducing the excessive accumulation of soil nitrate and sulfate step by step. The soil to be treated is deeply ploughed and dried, and the carbon source is evenly spread. After spreading the carbon source, the soil is turned and leveled and compacted. After the soil is leveled and compacted, an appropriate amount of water containing dicyandiamide is watered, and then degradable vegetable oil is sprayed on the soil surface. After spraying vegetable oil, cover the shed with film for 5-30 days to convert soil nitrate, then irrigate, and then continue to hold the shed for 2-7 days to wash out sulfate, so as to safely reduce soil nitrate and sulphuric acid step by step Excessive accumulation of salt. The invention realizes the step-by-step safe reduction of excessive accumulation of soil nitrate and sulfate, which not only avoids serious nitrate leaching caused by conventional large water washing salts, but also reduces nitrate leaching caused by conventional flooding reduction treatment of soil.

Description

technical field [0001] The invention relates to the field of soil degradation restoration, and specifically provides a method for reducing excessive accumulation of soil nitrate and sulfate step by step. Background technique [0002] Due to excessive fertilization and improper application of nitrogen and phosphorus fertilizers, the excessive accumulation of nitrate and sulfate in the soil of vegetable gardens in my country is relatively common, resulting in secondary salinization of the soil and affecting vegetable production. Vegetable farmers generally use the method of flooding salt to reduce the adverse effects of excessive soil salt accumulation on vegetable growth, but flooding salt is not selective, which will aggravate soil nitrate leaching and pollute groundwater. [0003] People can take appropriate methods during the fallow period, such as planting more salt-tolerant crops and reducing the soil to strengthen the absorption, transfer and in-situ transformation of s...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCY02P60/20
Inventor 黄斌秦淑琦
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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