Preparation of desertified soil conditioner based on straws and using method of desertified soil conditioner

Abstract

The invention discloses preparation of a desertified soil conditioner based on straws and a using method of the desertified soil conditioner. The preparation of the desertified soil conditioner basedon the straws comprises the steps of feeding straw powder in a mixed solvent consisting of ethylene glycol, ethyene catrbonate and sulfuric acid; preparing straw polyols in a liquidation manner underthe conditions of normal pressure and middle temperature; blending the straw polyols with isocyanate at high speed; spraying the mixture to desertified soil applied with a large number of a decomposedorganic fertilizer; meanwhile stirring the sprayed soil by using a rotary stirring machine; placing the stirred agglomerated soil on the surface of the desertified soil; and slightly pressing the desertified soil to form a moisture-retention and fertilizer-retention plough layer which has the thickness of 20 cm and has a porous structure. By the conditioner, the characteristics of dispersed particles and poor moisture and fertilizer retention of the desertified soil are solved, and agglomeration structures, water retention and storage ability and nutrient adsorption functions of the desertified soil are improved effectively. By straw liquid, types and contents of organic matters of the desertified soil are improved, and repair of the desertified soil and development of high-efficiency agriculture and forestry are facilitated.

Description

technical field [0001] The invention belongs to the technical field of agricultural chemistry, and in particular relates to a method for preparing and using a straw-based desertification soil improver. Background technique [0002] Soil desertification has seriously threatened the production space and sustainable development of human beings, and has become one of the ecological and environmental issues concerned by the world. China is one of the major countries deeply affected by land desertification, covering Xinjiang, Inner Mongolia, Tibet, Gansu, Qinghai, Shaanxi and other regions, covering an area of ​​1.49 million km 2 , about 15.5% of the total area of ​​China. Due to China's large desertification area, large population, and fragile ecology, coupled with the large amount of water used in desertified soil and poor planting effects, it is very difficult to prevent and control soil desertification in China. Therefore, there is an urgent need to develop a soil condition...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of a desertification soil improver based on straws, aiming at the high cost, complicated process and poor practical effect of the current methods for controlling desertification soil, which make it difficult for plants to grow, which seriously restricts the goals of desertification soil greening and farmlandization accomplish