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Method for eliminating soil acidification and secondary salinization of facility vegetable field

A technology of secondary salinization and soil acidification, applied in the field of facility agricultural land management and agricultural utilization, can solve problems such as poor control methods, and achieve the effects of reducing waste and environmental pollution, improving soil properties, and improving acidified soil.

Inactive Publication Date: 2012-04-11
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: the purpose of the present invention is to propose a method to quickly eliminate the nitrate nitrogen in the vegetable field of the facility in view of a series of practical problems such as the large accumulation of nitrate nitrogen in the soil of the facility vegetable field, soil acidification, serious secondary salinization, and poor control methods. Soil accumulated nitrate nitrogen, method to eliminate soil acidification and secondary salinization

Method used

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  • Method for eliminating soil acidification and secondary salinization of facility vegetable field
  • Method for eliminating soil acidification and secondary salinization of facility vegetable field
  • Method for eliminating soil acidification and secondary salinization of facility vegetable field

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Embodiment 1

[0022] The invention relates to a method for quickly removing base ions such as nitrate nitrogen and sulfate radicals from the soil of a facility vegetable field, and preventing and controlling soil acidification and secondary salinization. The core is to add easily degradable organic materials to the soil of facility vegetable fields where a large amount of nitrate nitrogen accumulates, acidification and secondary salinization are serious, and at the same time flooding treatment, to generate nitrate nitrogen, nitrate nitrogen, sulfate and other basic ions The reduction provides electron donors and a strong reducing environment, so as to quickly and effectively remove the base ions such as nitrate nitrogen and sulfate root accumulated in the vegetable soil, and reduce the soil salinity content; at the same time, the nitrate nitrogen reduction process consumes H+, significantly increasing the pH, To achieve the purpose of improving soil properties. The main implementation links...

Embodiment 2

[0031] A method for eliminating soil acidification and secondary salinization in facility vegetable fields, the parameters of soil acidification and secondary salinization are 3-4 years after planting vegetables in facility vegetable fields, pH value3 - Content > 200mg / kg, SO 4 2- content > 200mg / kg, EC value > 1.0, the treatment steps are: add crushed corn, rice or ryegrass to the vegetable field soil where nitrate nitrogen rapidly accumulates, accompanied by soil acidification and secondary salinization, and flood the soil at the same time Water treatment and monitoring of soil pH, NO 3 - and SO 4 2- Content, EC value, when pH value > 5.5, NO 3 - Content4 2- When the content drops to 50% of the initial value and the EC value is less than 1.0, the water is drained, and the soil improvement is completed after drying.

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Abstract

The invention discloses a method for eliminating soil acidification and secondary salinization of a facility vegetable field. The method is characterized by comprising the following steps of: adding crushed degradable organic materials into the soil of the vegetable field in which nitrate nitrogen is quickly accumulated and soil acidification and secondary salinization are performed, meanwhile, performing water flooding treatment, and monitoring the pH value, the NO<3-> content, the SO4<2-> content and the electric conductivity (EC) value of the soil; and when the pH value is more than 5.5, the NO<3-> content is less than 10 mg / kg, the SO4<2-> content declines to 50 percent of the initial value and the EC value is less than 1.0, draining the water, and thus finishing soil improvement after drying. According to the technical scheme, the soil characters of the vegetable field can be quickly and effectively improved; and the method is low in cost, simple, feasible and convenient to popularize in the basic level.

Description

technical field [0001] The invention belongs to the technical field of facility agricultural land management and agricultural utilization, and relates to a method for quickly removing soil nitrate nitrogen in facility vegetable fields and eliminating soil acidification and secondary salinization. Background technique [0002] Due to the extensive application of nitrogen fertilizers, base ions such as nitrate nitrogen and sulfate radicals in the soil of protected vegetable fields accumulate rapidly, accompanied by soil acidification and salinization, resulting in serious soil degradation and seriously affecting vegetable production; at the same time, the accumulation of nitrate in the soil Nitrogen enters the water body in large quantities through leaching, causing serious water pollution problems. Elimination of nitrate nitrogen accumulated in vegetable soil can not only reduce environmental pollution, but also alleviate the salinization of vegetable soil and improve soil pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00
Inventor 蔡祖聪张金波朱同彬
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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