Preparation method and application method of saline-alkali soil conditioner

A technology of soil conditioner and saline-alkali land, applied in the field of composite material preparation, can solve the problems of low return rate, long time-consuming, large investment, etc., and achieve the effects of increasing nutrient absorption, improving stress resistance, and promoting root system development

Active Publication Date: 2015-05-13
甘肃西部凹凸棒石应用研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional improvement methods and products cannot achieve the purpose of improving the soil structure while reducing the salinity and pH of the soil when improving saline-alkali land, and it takes a long time, requires a large investment, and has a low rate of return. These are the reasons for saline-alkali land improvement. problem to be solved

Method used

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  • Preparation method and application method of saline-alkali soil conditioner
  • Preparation method and application method of saline-alkali soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of soil conditioner for saline-alkali land is as follows: respectively drying and pulverizing lignite and attapulgite minerals containing humic acid, then mixing according to a ratio of 1:1, adding to a continuous reactor, and simultaneously spraying 110% of the total weight of the mixture % concentrated sulfuric acid, the reaction product falls into the aging chamber, and is kept at a heat preservation for 24 hours, so that the reaction tends to be complete. After the mature material is crushed, it is packed in a fiber-woven inner plastic film bag to obtain a powdery product. The process route is attached figure 1 shown.

Embodiment 2-5

[0024] A method for preparing a soil conditioner for saline-alkali land, the preparation method and process route are as in Example 1, and the consumption quota is as shown in Table 1.

[0025]

Embodiment 6-8

[0027] A preparation method of a soil conditioner for saline-alkali land: dry and pulverize lignite and attapulgite minerals containing humic acid respectively, then mix them in a ratio of 1:1, add them to a continuous reactor, and spray 110% of the total weight of the mixture at the same time Concentrated sulfuric acid, the reaction product falls into the aging bin, and is kept for 24 hours at heat preservation, so that the reaction tends to be complete. After the mature material is pulverized, it is added to the continuous reactor, and at the same time, 15% powdery attapulgite clay and an appropriate amount of water are added, granulated, dried and made into granules, and packed in fiber-woven plastic film bags lined with it, and used as granular products. The process route is attached figure 1 shown. The consumption quota is shown in Table 2.

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Abstract

The invention relates to a preparation method and application method of a saline-alkali soil conditioner. The preparation method comprises the following steps: mixing a peat or lignite raw material containing humic acid with well ground attapulgite ore powder at a ratio (0-1):1; then, spraying concentrated sulfuric acid accounting for 80-110% of the total weight of the mixture under the condition of stirring or kneading; feeding into a curing cabin, and stacking for curing or aging for 24h; and finally crushing the cured material into 80-mesh fine powder, thus obtaining the saline-alkali soil conditioner. The saline-alkali soil conditioner can be prepared into a granular product through granulating and drying so as to be used or can be premixed with other acidic organic and inorganic fertilizers and then used; the use amount of the saline-alkali soil conditioner is 0.6-0.8 ton per hectare. The saline-alkali soil conditioner integrates the physical and chemical functions such as chemical salifying, complexing, neutralizing, ion exchange, adsorption and desorption, passivation and immobilization, alkali efflorescence prevention and demulsification, is capable of remarkably improving the cation exchange capacity of soil, desorbing and leaching salt groups and basic groups and remarkably reducing the pH value; film land in which the saline-alkali soil conditioner is used can ensure high yield of crops in the same year.

Description

technical field [0001] The present invention relates to a method for preparing and using a composite material for soil improvement and management of saline-alkali land, in particular to a preparation of a composite material for soil improvement and management of saline-alkali land through modification and processing of attapulgite clay and other silicate clay ores and how to use it. Background technique [0002] Saline-alkali soil is a general term for saline and alkaline soils in which the salt content of the soil is too high (over 0.3%) so that crops are low-yielding or unable to grow. Because most of the soluble salt in the saline-alkali soil is sodium salt, the soil is heavy, the soil colloid is dispersed and emulsified, the air permeability is poor, it swells and becomes muddy when it encounters water, and it shrinks hard after dehydration, which seriously affects the germination of crop seeds and the normal development of crops. In addition, soil sodium ions Excessive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 王永斌蔺海明陈馨李文东高燕林王燕
Owner 甘肃西部凹凸棒石应用研究院
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