Alkaline soil improver

Abstract

The invention provides a new modifying agent formulation for alkaline soil, which can improve the alkaline soil modifying efficiency by calcium sulfate and phosphogypsum, and the product can be also used in alkali and arid area. The product comprises the following components by weight: calcium sulfate 1,straw 0.5-1.5, urea 0.01-0.08. The important contribution of the invention is that it takes the advantage of straw and mixes with calcium sulfate or with fertilizer industrial waste which combines the chemical modifying with physical modifying, which can improves the soil consolidation essentially, and the modifying effect is obviously better than simple chemical modifying on the condition of not proceeding eluting. The product can not only be used in the ground-crop cultivation proceeding irrigation and draining, but also can be used in forest plantation which not proceeding manual irrigation.

Description

technical field [0001] The invention relates to an alkaline soil improver and an application method, which is especially suitable for water-deficient and saline-alkali areas, and belongs to the technical field of soil improvement. Background technique [0002] The core mechanism of the traditional saline-alkali soil improvement method is to use calcium sulfate (gypsum) to replace the exchange-generated sodium in the soil, which is a relatively simple chemical improvement method. Disclosed as CN1377936A " utilize waste gypsum board to produce the method of saline-alkali soil improver and its product and application " and CN1487052A " saline-alkali improver ", because the exchangeable sodium in the soil of calcium sulfate needs to be washed out plow layer, sulfuric acid The increased soil salinity after the use of calcium also needs to be rinsed, so the improvement agent needs to be used in conjunction with irrigation; CN1487052A also proposed that the improvement agent must b...

AI Technical Summary

Problems solved by technology

Another main reason why alkaline soil affects the growth of crops is that the soil is usually relatively compact, and the simple chemical improvement method can not only improve the compaction, but also more irrigation and drainage, it is easy to cause the soil bulk density to increase rapidly with the increase of irrigation times, lead to more compacted soil