Nutritional agent for improving saline-alkali soil and preparation method thereof

Abstract

The invention relates to a nutritional agent for improving saline-alkali soil, and a preparation method of the nutritional agent; the nutritional agent is prepared by calcium carbonate, humic acid and bentonite; the preparation method comprises the steps of: crushing the calcium carbonate to be 200 meshes, crushing the humic acid to be 120 meshes and crushing the bentonite to be 100 meshes; mixing the crushed calcium carbonate, humic acid and bentonite according to the proportion of 1: 1: 1 and evenly stirring; and finally, pelleting to obtain the nutritional agent. The prepared nutritional agent comprises the components by weight percent: 12% of N, 6% of P2O5, 5% of K2O, 8% of Si, 5% of TDC, 3% of humic acid, 0.2% of ZN, 23% of SL, 13% of CA, 15% of organic matter, 4% of K2O4 and the balance of impurities. When in use, operations of soil washing and the nutritional agent is not needed to be washed, applied with pulverized fuel ash application and the like according to the conventional method are not needed, so that secondary emission pollution to the product can be completely avoided. The invention is simple and convenient in using method, time-saving, labor-saving and low in cost, so that the soil is completely improved fundamentally.

Description

technical field [0001] The invention relates to the technical field of land improving agents, in particular to a nutrient for improving saline-alkali land and a preparation method thereof. Background technique [0002] There are many saline-alkali lands in our country, and the nitrate alkali and soda salt in the saline-alkali cultivated soil can seriously damage the root system of crops. After the root system of crops is poisoned by saline-alkali, the root system will be poorly developed and prematurely senile, and it is also the main cause of various crop diseases. cause. The grain yield is low and the quality is poor. Due to the high salinity and high alkalinity in the soil, the organic matter of the soil is destroyed and lost, and the trace elements are extremely scarce. It is sticky when wet and hard when dry. There are often white saline-alkali precipitation on the soil surface. Using this product can quickly float the water quality. Reduce the specific gravity of wat...

AI Technical Summary

Problems solved by technology

Otherwise, even if a large amount of fertilizer is put in, it cannot be absorbed and utilized by crops, resulting in a negative effect of high input and low output.