Facility vegetable field secondary salinization soil conditioner and application thereof

Abstract

The invention discloses a facility vegetable field secondary salinization soil conditioner and application thereof. The facility soil conditioner is composed of the following components in parts by weight: 70-85 parts of organic fertilizer, 1 part of mineral source humic acid and 10-30 parts of calcium carbonate. The facility soil conditioner can improve the soil structure, promote the formation of a granular structure and reduce the soil salinization and acidification degree; the content of organic matters or humus in soil can be increased, so that the nutrient holding capacity of the soil can be improved, and the fertilizer retention capacity of the soil is improved; the facility soil conditioner can also improve the activity of beneficial microorganisms in soil, optimize soil microflora, promote conversion and absorption of plant nutrients in soil, enhance the fertilizer supply capacity of soil, enhance the disease resistance of crops, increase the yield of crops and improve the quality of agricultural products. Results of the embodiment show that after the facility soil conditioner is applied, the microbial activity of soil is increased, the yield is increased by 5-15%, the pH value is increased by 0.4-1, and the conductivity of the soil is reduced by 10% or above.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a soil conditioner for secondary salinization of facility vegetables and its application. Background technique [0002] With the continuous development of economy and society, in 2020, the planting area of ​​protected vegetables in my country has reached more than 4 million hectares. In the case of high input and high output, secondary salinization will appear in different degrees in the soil of facility agriculture in about 3 years, resulting in the reduction of crop yield and quality, and the problem of soil degradation is becoming more and more serious, mainly manifested as soil compaction and hardening , salinization, acidification, nutrient imbalance, chemical pollution, decline in organic matter and degradation of microbial flora. The secondary salinization of protected agricultural soil is mainly due to the accumulation of nitrate in the topsoil cause...

AI Technical Summary

Problems solved by technology

According to the source of raw materials, soil improvers can be divided into natural improvers, synthetic improvers, natural-synthetic copolymer improvers and biological improvers. These four types of improvers have their own advantages and disadvantages. For a certain type of soil, some production raw materials are not easy to obtain in large quantities, some raw material formulas are complex, some production methods are more complicated, and some use a large amount

The invention patent with application number 201810081379.1 discloses a compound soil improver and its preparation and use method. The compound soil improver is composed of decomposed organic fertilizer, fulvic acid, edible fungus residue, biogas residue and compound microbial agent. The improver is mainly composed of organic substances. Although it can improve the fertility of the soil, it lacks the compounding of natural minerals and inorganic substances. In the process of use, the fertilizer and water retention capabilities are poor, and the improver cannot improve the physical properties of the soil. property structure, such as soil expansibility, dispersibility and adhesion; at the same time, the amendment cannot adjust the pH of the soil and absorb heavy metals in the soil

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