Slow-release mixing fertilizer and preparation method thereof

Abstract

The invention discloses a slow-release mixing fertilizer which is prepared from the following raw materials in parts by weight: 70 to 80 parts of soybean cake, 30 to 34 parts of corncob, 6 to 9 parts of bamboo shoot shell, 13 to 16 parts of bagasse, 4 to 5 parts of maize meal, 2 to 3 parts of lime, 23 to 25 parts of slow-release urea, 12 to 15 parts of potassium oxide, 2 to 3 parts of magnesium sulfate, 1 to 2 parts of zinc sulfate, 1 to 2 parts of sodium selenite, 1 to 2 parts of manganese sulfate, 2 to 3 parts of borax, 1 to 2 parts of manganese sulfate, 1 to 2 parts of polyvinyl alcohol, 3 to 4 parts of EM (Effective Microorganism) agent, 4 to 6 parts of coating agent and a proper amount of water. The slow-release mixing fertilizer is prepared through the fermentation of an organic fertilizer and an inorganic fertilizer, so that the slow-release mixing fertilizer has the common characteristics of the organic fertilizer and the inorganic fertilizer, namely that the slow-release mixing fertilizer is not only rich in organic substances so as to provide necessary nutrient elements needed by the growing development of a crop to improve the yield and quality of the crop but also has the functions of improving the soil property and the moisture and fertility preservation of the soil. The prepared fertilizer is long in fertilizer efficiency and has a certain promotion function for the environment. The magnesium sulfate added into the fertilizer has the function of improving the soil with magnesium deficiency.

Description

technical field

[0001] The invention relates to the technical field of fertilizers, in particular to a slow-release mixed fertilizer and a preparation method thereof. Background technique

[0002] At present, my country's fertilizers are mainly chemical fertilizers composed of three inorganic elements, N, P, and K. This chemical fertilizer can meet the growth needs of crops in a short time. However, long-term use will damage the soil aggregate structure, which will easily cause soil compaction and soil hardening, which will affect the growth of crops and the decline in quality, resulting in a vicious circle. At the same time, although the organic fertilizer is rich in organic matter, the release of nutrients is slow, resulting in slow absorption of crops, low fertilizer efficiency, and no effective balance between various effective nutrients. Due to the unscientific fertilizer formula for crops, the yield of crops is not high and the quality is also low. Can't be improved. ...

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