Organic-inorganic compound fertilizer and preparation method thereof

Abstract

The invention belongs to the field of biochemical fertilizers, and particularly relates to an organic-inorganic compound fertilizer and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing organic matters and bacillus subtilis at the room temperature, stacking into a fertilizer heap I with the height of 60-70 cm, conducting primary stage fermentation treatment, then adding enzyme microorganism, and stacking into a fertilizer heap II with the height of 1-1.5 m, and conducting secondary stage fermentation treatment to obtain a fermented fertilizer; calcining kalium-containing rock and phosphate rock slag together at 500-800 DEG C for 1-2 h, cooling to 70-80 DEG C, adding humic acid, and unceasingly stirring until the temperature is equal to the room temperature to obtain a mixed material; uniformly mixing the fermented fertilizer, the mixed material and urea formaldehyde, heating to 50-60 DEG C, feeding into a granulating machine, spraying a starch solution into the granulating machine, and drying particles obtained through granulation so as to obtain the organic-inorganic compound fertilizer. The organic-inorganic compound fertilizer and the preparation method are short in process flow, simple in process, free of pollution, low in cost, and good and stable in fertilizer effect.

Description

technical field

[0001] The invention belongs to the field of biochemical fertilizers, and in particular relates to an organic-inorganic compound fertilizer and a preparation method thereof. Background technique

[0002] With the development of modern agriculture and life, the role of fertilizers in agricultural applications is increasing, and the amount of fertilizers is also increasing. Extensive fertilization has the benefit of improving the yield and quality of agricultural products such as fruits and vegetables, but due to some unsuitable factors in the production process or use process, the fertilizer utilization efficiency is low, the pollution is relatively large, and the residues of agricultural product pollutants are serious. The main manifestations are: land degradation, decline of soil fertility, reduction of organic matter and beneficial microorganisms, ecological imbalance of farmland, pollution of water resources and the environment, which may endanger human he...