Special compound fertilizer for saline-alkali soil and production method thereof

Abstract

The present invention discloses a special compound fertilizer for saline-alkali soil and a production method thereof. The compound fertilizer comprises microbial agents, mineral fertilizers, organic fertilizers, slow-release fertilizers, and controlled-release fertilizers. The microbial agents include halophilic bacteria, alkalophilic bacteria, nitrogen-fixing bacteria, phosphate solubilizing bacteria, potassium bacteria, Bacillus subtilis, Bacillus licheniformis and E. coli; the mineral fertilizers include Chinese medical stone, calcite and zeolite; the organic fertilizers include one or more of cow manure, horse manure, chicken manure, humic acid, milk vetch, alfalfa, crushed straw, leaf mold, soybean meal, peanut meal, fermentation product residues; the slow-release fertilizers include calcium superphosphate and urea formaldehyde; and the controlled-release fertilizers include ammonium sulfate, potassium chloride, potassium sulfate and ammonium chloride coated by semi-permeable membranes with different thicknesses. The fertilizer can effectively improve soil structure, reduce salinity and pH value of the soil, increase soil fertility, and maintain lasting fertility, and is particularly conducive to improving the saline soil.

Description

technical field [0001] The invention relates to the field of soil improvement in saline-alkali land, in particular to a special compound fertilizer for saline-alkali land and a production method thereof. Background technique [0002] The ecological restoration and improvement of saline-alkali land is a project that benefits the country and the people. It can increase the area of ​​cultivated land, tap agricultural potential, and is more conducive to the development of the agricultural industry. The improvement methods of saline-alkali land generally adopt physical methods, hydraulic methods, chemical methods, and biological methods. Among them, the first three methods require a lot of manpower and material resources, and the fourth method takes a long time and has slow results. [0003] However, using biological methods to restore and improve the ecology of saline-alkali land can best solve the fundamental problem, so there are more researches in this area at present. Breed...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign studies on salinity-alkali control in coastal areas mostly focus on soil improvement, salt-tolerant plant varieties, engineering technology, etc.

The conventional chemical improvement method has a very significant effect in the short term, but its shortcomings are also obvious, the cost is too high, and the impact on the soil environment needs to be investigated and studied

There are few reports on microbial fertilizers aimed at improving saline-alkali land and promoting crop production