Bio-organic fertilizer special for improving saline-alkali lands and preparation method thereof

Abstract

The invention relates to a bio-organic fertilizer special for improving saline-alkali lands and a preparation method thereof. The bio-organic fertilizer is prepared from the following raw materials by weight: 5-20% of bean pulp, 64-70% of vinegar dregs, 10-25% of humic acid, 5-7% of calcium magnesium phosphate, 0.1-0.3% of zinc sulfate, 0.1-0.2% of borax and 0.05-0.1% of compound microbial strains. The preparation method of the bio-organic fertilizer comprises the steps of compound microorganism selecting, activating, primary expanding, secondary expanding and expanding by tabling, material mixing, fermenting, turning, finished product preparing, low-temperature drying, detecting and measuring and packaging. The organic matters and the humus in the bio-organic fertilizer can adsorb the free ions fixed in the soil of the saline-alkali lands, reduce the solution concentration of the soil and neutralize the alkali in the soil of the saline-alkali lands, thus alleviating or eliminating the saline-alkali harms, and simultaneously release the potassium ions and increase the contents of the organic phosphorus and the inorganic phosphorus, thus improving the effectiveness of the fertilizer.

Description

technical field

[0001] The invention belongs to a microbial fertilizer, in particular to a special bio-organic fertilizer for improving saline-alkali land and a preparation method thereof. Background technique

[0002] Saline-alkali land is a type of salt accumulation, which means that the salt contained in the soil affects the normal growth of crops. Soil salinization is a worldwide problem. The area of ​​saline soil in the world is about 1 billion hectares, and my country has 99.13 million hectares, or about 1.47 billion mu; Nearly 500 million mu of land has been lost or abandoned due to salinization, mainly concentrated in the arid and semi-arid regions of North China, Northwest China and Northeast China. In addition, during the cultivation process, the long-term excessive application of chemical fertilizers will lead to the intensification of secondary salinization and serious compaction of the soil, and the continuous expansion of salinized and alkalized soil. In addit...