High-zinc saline-alkali soil slow release fertilizer and application of high-zinc saline-alkali soil slow release fertilizer in planting of tamarix leptostachys

Abstract

The invention provides a high-zinc saline-alkali soil slow release fertilizer. The high-zinc saline-alkali soil slow release fertilizer comprises the following components in parts by mass: 28-37 parts of maleic anhydride, 10-15 parts of citric acid, 3-6 parts of a sodium ion absorbing agent, 15-20 parts of straw biological oil, 11-15 parts of biochemical fulvic acid, 8-12 parts of urea, 7-13 parts of coke, 7-9 parts of potassium nitrate, 3-6 parts of zinc carbonate and 1-2 parts of manganese chloride. The invention also provides a preparation method of the high-zinc saline-alkali soil slow release fertilizer and an application of the high-zinc saline-alkali soil slow release fertilizer in planting of tamarix leptostachys. The high-zinc saline-alkali soil slow release fertilizer has the beneficial effects that the salt content of soil is reduced to 1.2-1.5%, and the sodium ion content of the soil is reduced by 35.6-35.8%; the moisture content of the soil is increased to 26.5-27.1%; the total nitrogen content of the soil is increased by 22.6-25.6%, and available potassium in the soil is increased by 52.1-52.6%; and the rooting rate of tamarix leptostachys is increased to 97.6-97.9% after the high-zinc saline-alkali soil slow release fertilizer is applied.

Description

technical field [0001] The invention provides a fertilizer and its application in the planting of Tamarix chinensis, in particular to a high-zinc slow-release fertilizer in saline-alkali land and its application in the planting of Tamarix chinensis, belonging to the technical field of soil fertilizers. Background technique [0002] For the improvement of saline-alkali land, chemical methods have a better effect. Chemical improvement is to apply some acidic salts to improve the properties of saline-alkali land, reduce the pH of the soil, increase the cation replacement capacity of the soil, reduce the salinity of the soil, and enhance the quality of the soil. The activity of microorganisms and enzymes in the medium promotes the growth of plant roots. Improve the physical properties of soil, increase soil aggregate structure, coordinate soil water, fertilizer, gas and heat, and increase soil fertility. [0003] However, the existing chemical improvement methods have the follo...

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Problems solved by technology

[0003] However, the existing chemical improvement methods have the following defects: (1) There is a lack of trace elements in the improved fertilizer, which cannot meet the growth needs of plants in saline-alkali land; (2) The degree of reduction in soil sodium ion content is not ideal; (3) The improved soil contains water (4) The content of total nitrogen and available potassium in the improved soil is low; (5) The survival rate of plants planted in the improved soil is low

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