Disposable special rice fertilizer for crab raising rice field

Abstract

The invention relates to a compound fertilizer, in particular to a disposable special rice fertilizer for a crab raising rice field. The special fertilizer consists of organic fertilizer and inorganic fertilizer in a weight part ratio of 5-7: 3-5, wherein the organic fertilizer comprises 2 to 5 weight parts of livestock and poultry dung and 1 to 2.5 weight parts of humic acid; and the inorganic chemical fertilizer comprises 9 to 11 weight parts of nitrogenous fertilizer, 2 to 4 weight parts of phosphate fertilizer and 3 to 6 weight parts of potassium fertilizer. The yield of the rice is increased obviously after one-time application, any fertilizer does not need to be applied at the later stage, and the special fertilizer does not harm river crabs.

Description

technical field [0001] The invention relates to a compound fertilizer, in particular to a one-time special fertilizer for rice paddy fields where crabs are raised. Background technique [0002] Raising crabs in paddy fields is based on the principle of symbiosis and mutual benefit between rice and crabs. It scientifically utilizes the symbiotic relationship between animals and plants, skillfully combines planting and breeding in the same ecological environment, and can give full play to the paddy field area and water space. Give full play to the potential of land resources and organically combine the production of pollution-free high-quality rice with aquaculture. River crabs can eat some weeds in rice fields, which reduces the input of pesticides and improves the production efficiency of fertilizers. The excrement of river crabs and the residual bait of feeding crabs can increase the content of organic matter in the soil and fertilize the soil, thus reducing the amount of f...

AI Technical Summary

Problems solved by technology

[0003] However, in the actual production process of raising crabs in rice fields, we always face the problem that rice fertilization will cause harm to the growth of river crabs

Farmer friends must fertilize rice to ensure the normal harvest of rice, and follow the growth period of rice to carry out scientific and reasonable topdressing to achieve high yield of rice. However, because the nitrogen fertilizer applied will produce ammonia nitrogen after it reaches the water body, it will cause harm to river crabs. Phosphate fertilizers will also be eaten by crabs, which will also cause damage to the growth of crabs, resulting in slow growth or no growth of crabs (little old crabs) or even death of crabs, and also harm the quality of crabs