Special formula fertilizer for common head cabbage and preparation method thereof

Abstract

The invention belongs to the technical field of production of agricultural fertilizer and relates to special formula fertilizer for common head cabbage. The special formula fertilizer is prepared fromthe following raw materials in parts by weight: 60 to 80 parts of amino acid, 60 to 80 parts of humic acid, 5 to 10 parts of insect nuclear polyhedrosis virus, 40 to 60 parts of soybean meal, 208 to255 parts of urea, 108 to 174 parts of industrial-grade monoammonium phosphate, 80 to 110 parts of potassium sulfate and 0.5 to 1 part of compound microorganism bacterium liquid, wherein in the fertilizer, the content of organic matters is 20 percent to 40 percent, the sum of N, P and K is 19 percent to 40 percent and the content of compound microorganism bacteria is greater than or equal to 0.02billion / g. The invention further provides a preparation method of the special formula fertilizer for the common head cabbage; the preparation method comprises the following steps: determining physiochemical properties of soil of a planting land and calculating needed supplementation amounts of the N, P and K of the common head cabbage according to a fertilizer needing principle of a growth periodof the common head cabbage; crushing raw materials except the compound microorganism bacterium liquid and the soybean meal respectively and mixing to prepare fertilizer grains; after uniformly mixinga prepared compound microorganism bacterium agent and film-coating liquid, spraying on the surfaces of the fertilizer grains. By adopting the special formula fertilizer for the common head cabbage, the cost can be reduced, the yield is increased and the quality is improved.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizer production, and in particular relates to a special formula fertilizer for cabbage and a preparation method thereof. Background technique [0002] Cabbage is generally planted on fertile sandy loam to clay loam soil. It is a fertilizer-loving crop and absorbs more soil nutrients than ordinary vegetables. For every 1000 kg of cabbage produced, it needs to absorb 4.1 pure nitrogen from the soil -6.5 kg, phosphorus pentoxide 0.5-0.8 kg, potassium oxide 4.1-5.7 kg, calcium 3.5-4.5 kg, sulfur and boron also play an important role in the growth and development of cabbage. At present, most of the inorganic fertilizers used in the cultivation of cabbage are simple chemical fertilizers and compound fertilizers with unreasonable ratios. During the growth process, they need to be fertilized many times, and the operation intensity is high. If the ratio is uncoordinated, the fertilizer effect i...

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Problems solved by technology

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to overcome the deficiencies such as yield reduction and quality decline caused by reasons such as irrational fertilization and partial application of chemical nitrogen fertilizers in production, and provide a method that matches the nutritional requirements of cabbage. The special formula fertilizer for head cabbage and the preparation method thereof can not only improve the output but also improve the quality

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