Special organic-inorganic compound fertilizer for shrimps and rice and preparation method thereof

Abstract

The invention discloses a special organic-inorganic compound fertilizer for shrimps and rice. The special organic-inorganic compound fertilizer comprises urea, mono-ammonium phosphate, potassium chloride, a calcium magnesium phosphate fertilizer, humic acid and a fermented and decomposed material. The preparation method comprises the following steps: crushing rape seed cakes, plant ash and plant straws, adding a microbial agent, uniformly mixing, and carrying out stack retting fermentation to obtain a fermented and decomposed material; and adding the fermented and decomposed material, urea, mono-ammonium phosphate, potassium chloride, a calcium magnesium phosphate fertilizer and humic acid into a stirrer, uniformly mixing and crushing, granulating, drying, screening, and packaging to obtain the special organic-inorganic compound fertilizer for shrimps and rice. According to the invention, the organic fertilizer and the inorganic fertilizer are combined, the economic benefit in a shrimp-rice co-cropping mode is effectively improved through scientific proportioning of the organic fertilizer and the inorganic fertilizer, the inorganic nutrients meet the growth requirements of plants such as rice and aquatic plants, the organic nutrients achieve the effects of improving soil and fertilizing water, CaO promotes the growth of lobsters, and SiO2 improves the quality of rice.

Description

technical field [0001] The invention belongs to the field of fertilizers, in particular to a special organic-inorganic compound fertilizer for shrimp and rice and a preparation method thereof. Background technique [0002] "Shrimp and rice co-cropping" is a three-dimensional ecological planting model, that is, rice is planted in the paddy field and crayfish are raised at the same time, and crayfish and rice grow together in the paddy field. In "Shrimp and Rice Co-production", shrimp does not compete with food for land, and it can also mobilize the enthusiasm of farmers. [0003] However, the fertilizers currently used in the "shrimp-rice co-cropping" model mainly include conventional compound fertilizers and organic fertilizers. Among them, compound fertilizers have no obvious effect on the growth of lobsters, and long-term use will cause soil compaction, excess nutrients in the water body, and excessive water quality. Fertilizer, water pH acidity, etc. are not conducive to...

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Problems solved by technology

[0003] However, the fertilizers currently used in the "shrimp-rice co-cropping" model mainly include conventional compound fertilizers and organic fertilizers. Among them, compound fertilizers have no obvious effect on the growth of lobsters, and long-term use will cause soil compaction, excess nutrients in the water body, and excessive water quality. Fertilizer, water quality and pH are too acidic, etc., which are not conducive to the growth of rice and lobster; the nutrient content of organic fertilizer is completely insufficient for the growth of rice, and the fertilizer effect is slow, and the decomposition process of organic fertilizer will consume more oxygen in the water, which is not conducive to growth of lobster

Therefore, none of the fertilizers used in the current "shrimp-rice co-cropping" mode can satisfy the co-growth of rice and lobster at the same time.

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