Saline-alkali soil improvement and bioremediation method

A soil improvement and bioremediation technology, which is applied in the fields of soil preparation, cultivation, agricultural machinery and implements, etc., can solve the problems of insignificant improvement of medium and severe saline-alkali land, and achieve good ornamental value, beautiful flowers and colors, and stable salinity.

Active Publication Date: 2018-05-04
TIANJIN REDSUN WATER IND
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Problems solved by technology

[0006] Chinese patent CN 102763557 B discloses a greening method for native soil in medium-severe saline-alkali land. It uses Tamarix saplings to interplant salix, bamboo willow and white wax, and fertilizes and plows the land before planting. The key point of the invention It is how to improve the survival rate of saplings, and the method of simply applying organic fertilizers is not obvious for the improvement of medium and severe saline-alkali land

Method used

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Embodiment Construction

[0035] The applicant carried out the actual implementation of the technical solution of the present invention in Nangang Industrial Zone, Binhai New Area, Tianjin.

[0036] The project started on August 22, 2016

[0037] Step 1: Prepare Soil Conditioner

[0038] Using the sludge compost in the applicant's factory area, anaerobic fermentation for 10-15 days to produce soil improver;

[0039] The second step: condition the saline-alkali soil and prepare green cultivation soil

[0040] 1. Dig 60cm deep in place, and mix the original soil and compost while digging. The ratio of original soil and compost is 2:1, and mix evenly;

[0041] 2. Cover with a black film and carry out secondary fermentation for 5-7 days to mature the soil and build a soil aggregate structure;

[0042] 3. Measure EC (soil salt concentration) and pH until EC≤0.5% and pH≤8.0;

[0043] Step 3: Establish a green cultivation area

[0044] Since the start of construction is in the rainy season in the north, ...

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Abstract

The invention belongs to the field of environmental protection, and specifically provides a saline-alkali soil improvement and bioremediation method. According to the specific technical scheme, the method includes the steps that a soil amendment is prepared; saline-alkali soil is conditioned, and greening cultivation soil is prepared; a greening cultivation area is established; greening nursery stocks are cultivated, longitudinal and transverse isolation areas are arranged through the establishment of the greening cultivation area, and it is ensured that the saline-alkaline degree of the cultivation area is stable; fraxinus chinensis and amorpha fruticosa are screened and interplanted; soil improvement with organic fertilizer, longitudinal and transverse isolation and selection of improvedtree species are conducted at the same time so that the soil saline-alkaline degree can be effectively reduced, the effect is achieved that EC is smaller than or equal to 0.3% and pH is greater thanor equal to 7.2, the structure of the soil is improved, and soil hardening is prevented.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a saline-alkali soil improvement and bioremediation method. Background technique [0002] China is a country with a large amount of saline-alkali land, ranking third among the top 10 countries with saline-alkali land area. China's saline-alkali land is distributed in 17 provinces including the Northwest, Northeast, North China and coastal regions. The total area of ​​saline-alkali wasteland and saline-alkali land affecting cultivated land exceeds 500 million mu, of which the agricultural development potential accounts for more than 10% of China's total cultivated land. Saline-alkali land affects the normal growth of crops, and the yield of crops is extremely low, or even no grass grows. [0003] The area where the applicant is located belongs to the coastal humid-semi-humid seawater immersion saline area. The economy in this area is relatively developed, and the arable so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G17/00
Inventor 张兆军
Owner TIANJIN REDSUN WATER IND
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