Compound bacterial fertilizer for saline-alkali soil and preparing method thereof

Abstract

The invention discloses the technical field of saline-alkaline soil improvement, and particularly discloses a compound bacterial fertilizer for saline-alkali soil and a preparing method thereof. The compound bacterial fertilizer is prepared from, by weight, 26-36 parts of decomposed chicken manure, 13-18 parts of decomposed straw powder, 12-20 parts of urea, 8-16 parts of monopotassium phosphate,5-12 parts of sulphur powder, 3-7 parts of humic acid, 1-4 parts of kelp, 0.1-0.18 part of bean powder, 0.02-0.09 part of soluble starch and 0.002-0.006 part of a microbial agent; the kelp serves as avanward substance capable of improving the microbial activity and increasing the microbial quantity, the kelp, other organic fertilizers and inorganic fertilizers are applied to soil together, the good improvement effect on the saline-alkaline soil can be achieved, and the kelp is wide in source and low in cost, and is compared with a microbial agent with the same activity and quantity, the costis greatly reduced.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, and specifically relates to a compound bacterial fertilizer for saline-alkali land and a preparation method thereof. Background technique [0002] Saline-alkali land means that the land is affected by natural or human factors, causing salt substances to gradually penetrate into the soil, so that the soil contains more salt and alkali, and makes this type of land unusable. The saline-alkali land in China is roughly distributed The area is in the northwest, northeast, north China and coastal areas. The main reason for the formation of saline-alkali land is that the land in relatively arid areas evaporates into water vapor and is discharged into the air, but the salt in the water cannot be eliminated and remains in the air. In the soil, after a long period of accumulation, the salt in the soil gradually increases, thus forming a saline-alkali land. The soil structure of the sa...

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Problems solved by technology

[0002] Saline-alkali land means that the land is affected by natural or human factors, causing salt substances to gradually penetrate into the soil, so that the soil contains more salt and alkali, and makes this type of land unusable. The saline-alkali land in China is roughly distributed The area is in the northwest, northeast, north China and coastal areas. The main reason for the formation of saline-alkali land is that the land in relatively arid areas evaporates into water vapor and is discharged into the air, but the salt in the water cannot be eliminated and remains in the air. In the soil, after a long period of accumulation, the salt in the soil gradually increases, thus forming a saline-alkali land. The soil structure of the saline-alkali land is poor, which brings a series of problems such as poor water permeability, easy hardening, and poor microbial activity. Therefore, the soil falls into a vicious circle. In growing plants; in recent years, the good effect of compound bacterial fertilizer on saline-alkali land has been gradually paid attention to. It mainly completes the transformation of substances and the continuous formation of beneficial metabolites through the vigorous reproduction and metabolism of beneficial microorganisms to improve the soil structure of saline-alkali land and Reduce the content of salinity, which can promote a virtuous cycle of saline-alkali land, but the number of microorganisms in the existing saline-alkali soil compound bacterial fertilizer is small and the activity is poor, and the cost remains high, which is not conducive to the effective management of saline-alkali land

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