Special improved acid fertilizer for saline and alkaline land

Abstract

The invention discloses a special improved acid fertilizer for a saline and alkaline land, belongs to the technical field of agricultural composite fertilizer preparation and is applicable to saline and alkaline lands. The mixed fertilizer is composed of the following five acid granules through uniform mixing: granular monoammonium phosphate, granular potassium sulfate, granular ammonium sulfate,granular sulfur coated urea and granular organic fertilizers in a mass ratio of 0.2:0.17:0.12:0.25:0.26. The mixed fertilizer disclosed by the invention is applicable to wide saline and alkaline lands, plays a relatively good function of saline and alkaline land improvement, and requirements and support to agricultural crop growth conditions on the saline and alkaline lands are well guaranteed, and utilization of the saline and alkaline lands is promoted.

Description

technical field [0001] The invention relates to the technical field of compound fertilizer manufacture and processing, in particular to a special improved acid fertilizer for saline-alkali land and its application in agriculture. 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. According to the incomplete statistics of UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which my country is the largest 99.13 million hectares. The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive, and land resources are becoming more and more scarce. The utilization of vast saline-alkali land becomes particularly important. In the process of utilization, i...

AI Technical Summary

Problems solved by technology

The formation of alkaline soil and alkalized soil in my country is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally high, and plants in severe saline-alkali soil areas can hardly survive, and land resources are becoming more and more scarce. The utilization of vast saline-alkali land becomes particularly important. In the process of utilization, it can be divided into light saline-alkali land, moderate saline-alkali land and heavy saline-alkali land. Light saline-alkali land means that its emergence rate is 70%-80%. Its salt content Below 3 / 1000; heavy saline-alkali land refers to its salt content exceeding 6 / 1000, and the emergence rate is lower than 50%; the middle piece is moderately saline-alkali land (expressed by pH value: the pH value of mildly saline-alkali land is: 7.1-8.5, moderate saline-alkali soil pH value: 8.5-9.5, severe saline-alkali soil pH value: 9.5 or above), in order to gradually improve saline-alkali land soil through replanting and create a soil environment suitable for crop growth to the greatest extent, special customization is required It is suitable for crop fertilizers of various types of saline-alkali land, but the existing fertilizers suitable for saline-alkali land have limitations and the effect is not ideal