Water flush fertilizer containing azadirachtin for saline-alkali soil and application of water flush fertilizer in sabina chinensis (l.) ant. cv. pyramidalis planting

Abstract

The invention provides a water flush fertilizer containing azadirachtin for saline-alkali soil. The water flush fertilizer is prepared from the following components in parts by mass: 30-35 parts of maleic anhydride, 7-15 parts of citric acid, 5-7 parts of nitrogen fertilizer, 12-13 parts of biochemical fulvic acid, 1-2 parts of urea iron, 1-2 parts of ammonium manganous sulfate, 15-17 parts of amino acid salt, 2-3 parts of azadirachtin, 3-4 parts of methyl anyl alcohol and 22-25 parts of water. The invention also provides the application of the fertilizer in sabina chinensis (l.) ant. cv. pyramidalis planting. The water flush fertilizer has the beneficial effects that the salinity of the soil is reduced to the range of 2.1-2.5%, the pH of the soil is reduced to the range of 7.4-7.7, the aeration porosity of the soil is increased to the range of 12.3-14.5%, the volume weight of the soil is reduced to the range of 0.92-0.96g / cm<3>, the content of the water-stable aggregate structure of above 0.25mm in the soil is increased to the range of 45.6-51.2%, the transplanting survival rate of the sabina chinensis (l.) ant. cv. pyramidalis is 97.1-97.5%, and the incidence is reduced to the range of 72.3-80.4%.

Description

technical field [0001] The invention provides a fertilizer and its application in the planting of Shu juniper, in particular to a fertilization containing azadirachtin in saline-alkali land and its application in the planting of Shu juniper, belonging to the technical field of soil fertilizer. Background technique [0002] my country's low-yield soil area is still large, and poor soil structure has become a new factor restricting crop quality and yield in China. The main technologies for improving soil structure in my country include: rational irrigation and drainage, tillage, and replenishment of organic matter and divalent salts. Reasonable irrigation and drainage, because it has little effect on soil water stability and aggregates, cannot fundamentally solve the problem of poor soil structure; farming is affected by soil moisture, and the formed soil structure cannot be permanent; organic fertilizer is a good way to improve soil, but organic The amount of fertilizer is lim...

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Problems solved by technology

Reasonable irrigation and drainage, because it has little effect on soil water stability and aggregates, cannot fundamentally solve the problem of poor soil structure; farming is affected by soil moisture, and the formed soil structure cannot be permanent; organic fertilizer is a good way to improve soil, but organic The amount of fertilizer is limited, and the amount of application is large, labor-intensive and time-consuming, and it cannot be produced industrially, which limits the area of ​​soil improvement with organic fertilizer; the application amount of polymer compound to improve soil is small, but the effect is large, but the current research in my country is limited to the preparation of polymer compounds and individual Field experiments on the effects of molecular compounds on soil structure and crop growth have not yet formed products, so polymer compounds have not yet played their due role in the improvement of medium and low-yield soils in my country

At the same time, due to its high cost of production and application, it further limits its application in agriculture.

[0003] Applying chemically improved fertilizers to saline-alkali land is an important method to improve soil and increase soil fertility, but there are also some defects: (1) the function is single, and it cannot effectively prevent and control plant diseases; (2) the salt content of the soil (3) After the improvement, the soil has less air-permeable pores, and the proportion of water-stable aggregate structures above 0.25mm in the soil is small, and the stability is poor; (4) The survival rate of plants planted in the improved soil not high, low growth

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