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Soil improvement method

A soil improvement and soil conditioner technology, applied in the field of using biochar to improve soil fertilizer efficiency and pH value, can solve the problems of not simultaneously improving soil pH value, not realizing the compatibility between biochar and soil, etc. The effect of carbonization efficiency, short time and low carbonization temperature

Inactive Publication Date: 2017-07-07
北京联绿生态环境有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in the above-mentioned prior art, the compatibility problem of biochar and soil is usually not realized, and the effect of improving soil pH value is usually not combined

Method used

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Embodiment 1

[0060] Cotton stalks were taken from Shanghe County, Jinan City. Mature cotton stalks after harvesting this year were taken. Leaves and shells were removed, and side branches were not removed. They were stored in a ventilated and cool laboratory for later use. Cut the cotton stalks into sections with an average length of 0.8 cm, soak the cut cotton stalks in NH 4 Cl solution, soaked at 60°C for 3h, then took out the soaked cotton stalks and drained them, and placed the drained cotton stalks in a tubular heater (from Lihua Machinery Co., Gongyi City) at a temperature of 350 ℃ water vapor, pressure 0.3MPa, heating for 5h, then cooling to room temperature, taking out, fully washing the product with 35% hydrochloric acid solution, and then washing with distilled water until the pH of the washing solution is between 6-7, then drying, That is, biochar. The biochar is uniformly mixed with the compatibilizer represented by the formula (I) in a weight ratio of 150:1 to prepare a soil ...

Embodiment 2

[0062] Get the air-dried soil 10kg of the 5cm-thick topsoil on the surface of an apple orchard in Mengyin, Shandong Province, which has been continuously cropped for 17 years, and pass through a 2mm sieve, mix it with the soil improver obtained in 200g embodiment 1, and spread it back to its original place. Select 2 tip 10-20 leaf dwarf stock apple seedlings (from Baoji Huasheng Fruit Industry Co., Ltd.) with similar growth and 7-day pre-cultivation with the base fertilizer nutrient solution to plant in barrels, and plant 1 plant in each barrel. For daily management, the cultivation period is 12 months, and the base fertilizer is 100g urea + 200g superphosphate + 50g potassium sulfate. The pH value of the surface soil was 4.1, the pH value of the surface soil was 4.75 after the 45-day cultivation, the pH value of the surface soil was 5.01 after the 60-day cultivation, and 5.10 after the 90-day cultivation.

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Abstract

The invention provides a soil improvement method. The method comprises the following steps: scraping surface-layer soil, with the thickness being 1 to 10 cm, of the surface soil in an orchard, mixing the surface-layer soil and a soil improvement agent, and flatly paving the mixture on the earth surface of the orchard. By the method, the fertilizer efficiency of poor soil can be improved effectively, and the pH value of the acidified soil can be improved continuously.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a method for improving soil by using biochar, in particular to a method for improving soil fertilizer efficiency and pH value by using biochar. Background technique [0002] With the improvement of agricultural mechanization, traditional organic fertilizers have been gradually replaced by agricultural chemical fertilizers, resulting in a gradual decline in soil fertility. How to maintain the balance of soil nutrients, improve soil structure and physical and chemical properties, increase soil fertility, and increase crop yield has received widespread attention. With the extension of continuous cropping time, the acidification of orchard soil is becoming more and more serious, resulting in the decline of orchard productivity year by year, frequent occurrence of diseases, and the decline of fruit quality. Therefore, how to improve the soil environment and ferti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00C09K109/00
CPCB09C1/08C09K17/40C09K2101/00C09K2109/00
Inventor 朱明刘涵王吉峰
Owner 北京联绿生态环境有限公司