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Method for improving soil and conserving soil and water in Karst rocky desertification areas

A soil and water conserving agent and karst technology, which is applied in the field of soil improvement and soil and water conservation in karst rocky desertification areas, can solve the problems of huge human, material and financial investment, long recovery process, and high technical difficulty, and improve the physical and chemical properties. , the effect of increasing nutrients, increasing speed and success rate

Inactive Publication Date: 2011-05-11
INST OF BOTANY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Guangxi Nongla is a good special case of closing mountains for afforestation management. However, with the rapid development of science and technology, huge population pressure, and serious shortage of resources, it will take more than 40 years to restore the ecological environment of the degraded karst area. Obviously, the restoration process is too long. For a long time, the recovery management not only requires huge manpower, material and financial resources, but also the technical difficulty of management is also very large
In addition, for those areas that are completely destroyed, deeply degraded, with little soil and low natural recovery potential, the method of carrying out alien soil afforestation is also somewhat simple, because a few heavy rains will completely remove the alien soil. Especially in those areas where the vegetation has been repeatedly destroyed, the soil layer is shallow, the soil erosion is serious, and the rocky desertification has been severe.

Method used

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  • Method for improving soil and conserving soil and water in Karst rocky desertification areas
  • Method for improving soil and conserving soil and water in Karst rocky desertification areas
  • Method for improving soil and conserving soil and water in Karst rocky desertification areas

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Preparation of test soil and test materials: the soil was taken from the barren hills and shrubs in Chenqi Township, Puding County, Guizhou Province, the clay was taken from the farmland of Chenqi Township, Puding County, Guizhou Province, and the humic acid soil was taken from Puding County, Guizhou Province valley bottom. After crushing the large pieces of soil (each piece of soil is not more than 1cm), spread it out indoors for 10 days, until it is dry and ready for use. The method of measuring the soil pH value is to pass the dried soil through a 60-mesh sieve, weigh 20 grams and place it in a 50-ml beaker, add 20 ml of distilled water, and keep stirring the suspension for 5 minutes, then cover it with a glass After standing still for 1 hour with the cover, take the supernatant and measure its pH value with a pH meter electrode to be 7.14 to 7.24 at a temperature of 24°C; carboxymethylcellulose-polyacrylic acid resin is synthesized by itself, using acrylic acid and ...

Embodiment 2

[0013]Water retention effect test of improved soil (1): Get 2200 grams of soil in the barren hills, shrubs and grasses of Chenqi Township, Puding County, Guizhou Province after treatment in Example 1, add carboxymethylcellulose-polyacrylic acid resin 10 grams, 100 grams The clay of 1 gram, the mixed soil of 90 grams of humic acid soil, put into the test container after mixing, pat the test container, and the soil that comes out is poured into the soil of the test container again, wherein the thickness of the soil is 7.5 cm, improved The total soil weight is 2400 grams. Place the container containing the soil on the support, spray 1440 grams of water on the soil with a pressure spray can, and slowly pour the water flowing out from below into the soil again. After the soil absorbs water evenly, weigh and record the water and soil weight. In the control experiment, in addition to replacing 10 grams of carboxymethyl cellulose-acrylic resin, 100 grams of clay and 90 grams of humic...

Embodiment 3

[0016] Improved soil (2) water retention effect test: get 2100 grams of soil in the barren hills, shrubs and grasses of Chenqi Township, Puding County, Guizhou Province, which are treated in Example 1, add carboxymethylcellulose-polyacrylic acid resin 15 grams, 150 grams The clay, the mixed soil of 135 grams of peat, put into the test container after mixing evenly, beat the test container, pour the soil out into the soil of the test container again, wherein the thickness of the soil is 7.8 cm, and the total weight of the improved soil is 2400 gram. Other tests and data determination methods are completely the same as in Example 2. The measurement time of the improved soil (2), the total weight of water and soil, the weight of water and the moisture content of the soil are listed in Table 1 together with the corresponding data of the improved soil (1) and the control soil.

[0017] The data in Table 1 shows that after 85 hours and 30 minutes, the moisture content (50.9%) in th...

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Abstract

The invention discloses a method for improving soil and conserving soil and water in Karst rocky desertification areas, In the method, turf in humic acid soil at the foot of Karst mountains and Guizhou upland swamps as a soil nutrient and acidity improver, cultivated land clay of slope of Karst mountains as a soil fixing agent and little amount of artificially synthesized carboxymethylcellulose-polyacrylic resin as a soil and water conservation agent are applied to desertification Karst soil according to actual condition of soil in hoodoos and hills of desertification Karst uplands and demands for recovering the vegetation so as to achieve the purpose of improving the soil, reducing the loss of soil and water, increasing the water conservation capacity of the soil and improving the adaptability of the soil for the growth of plants and promoting the rapid recovery of plants.

Description

technical field [0001] This patent belongs to the technical field of vegetation and ecological environment reconstruction engineering in karst rocky desertification areas. Clay, humus and peat components are used to improve the soil in karst rocky desertification areas to prevent soil erosion and facilitate vegetation restoration. Background technique [0002] For a long time, in most karst areas, due to human disturbance such as firewood mining, grazing, and burning wasteland, the vegetation has been repeatedly destroyed, vegetation resources are scarce, the ecological environment is fragile, natural disasters are frequent, the soil layer is shallow, soil erosion is extremely serious, and rocks are exposed in some areas. The rate of desertification has been increasing year by year, which has caused the phenomenon of rocky desertification to become more and more serious, making it very difficult to restore vegetation. Although the water and heat are in the same season and t...

Claims

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Application Information

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IPC IPC(8): E02D3/00C09K17/40C09K105/00
Inventor 高贤明
Owner INST OF BOTANY CHINESE ACAD OF SCI
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