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Composition for regulating soil acidity and application thereof

A composition and soil technology, applied in the field of compositions for regulating soil acidity, capable of solving problems such as low acidic soil fertility

Inactive Publication Date: 2017-08-11
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, acidic soils generally have low levels of fertility, which is another unfavorable factor affecting agricultural production in the region

Method used

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  • Composition for regulating soil acidity and application thereof
  • Composition for regulating soil acidity and application thereof
  • Composition for regulating soil acidity and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Effects of combined application of alkali residue and organic fertilizer on red soil acidity, red soil fertility and rapeseed yield.

[0024] Conditioning agent—alkali slag is dried until the moisture content is lower than 15% (weight), then pulverized and ground; the organic fertilizer is a commercial organic fertilizer.

[0025] The field experiment was carried out on the acidic soil in the south of Anhui, Anhui, and a field with flat terrain and uniform soil quality was selected. The experimental plot was set to 10m×2m, and a 2m wide protective row was left around the experimental area. The experiment set up the treatments of control, alkali slag, organic fertilizer, and alkali slag+organic fertilizer. Each group of treatments was repeated 3 times, and the treatments were arranged in a random manner. Apply the conditioner evenly to the soil surface of the plot, plow and rake evenly, sow the seeds a week later, and fertilize according to the conventional method, and t...

Embodiment 2

[0027] Comparison of acidification resistance of straw biochar.

[0028] Preparation and properties of the conditioning agent—dried and crushed peanut straw charcoal, put it into a ceramic crucible, cover the crucible, put it in a muffle furnace and heat it to 400°C, keep the temperature constant for 3 hours, and turn off the power of the muffle furnace , the samples were taken out after natural cooling, and the peanut straw biochar was prepared. The same method was used to prepare biochar from corn, rapeseed and rice straw for comparative study. Figure 4 Straw showed that the yield of biochar prepared from peanut straw was higher than that of corn straw and rape straw, but similar to that of rice straw.

[0029] Anti-acidification ability of conditioner—weighed 0.6 g of biochar prepared from different crop stalks, added 60 mL of deionized water, and 2 Under the same conditions, stir and equilibrate with a magnetic stirrer for 1 h. By automatic titrator, with 0.2M HNO 3 T...

Embodiment 3

[0031] Effects of straw biochar on the acidification resistance of red soil.

[0032] Preparation of conditioning agent——The preparation of straw biochar is the same as in Example 2.

[0033] Taking the red soil developed from the Tertiary red sandstone in Yingtan, Jiangxi Province as an example, 120 g soil samples were weighed, and biochar prepared from different straws was added at 5% of the soil weight, mixed thoroughly, put into a plastic beaker, and deionized Water to adjust the soil moisture content to 70% of the soil field water holding capacity, seal the plastic cup with plastic wrap, and leave a small hole in the middle to facilitate gas exchange and reduce water loss. Then the plastic cups were placed in a constant temperature incubator at 25°C for constant temperature cultivation, weighed and replenished with water every 3 days to keep the soil water content constant. After cultivating for 30 days, the soil samples were taken out, air-dried, ground and passed through...

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Abstract

The invention discloses a composition for regulating soil acidity and application thereof and belongs to the technical field of soil improvement and regulation. The composition is prepared from straw biomass charcoal, alkali residues and an organic fertilizer, wherein the ratio of the straw biomass charcoal to the alkali residues to the organic fertilizer is (80-100) to (6-15) to 50. The three materials can remarkably improve the soil acidity and soil fertility and thus increase crop yield through matched application, meanwhile the soil acidification resisting capability is improved, the improvement effect time is prolonged, and the re-acidification process is retarded. A regulating method is a cheap and long-acting comprehensive soil acidity regulating method. A comprehensive red soil acidity regulating method mainly uses industrial and agricultural wastes as raw materials to prepare a regulating agent and opens a new way for resourceful waste utilization.

Description

technical field [0001] The invention belongs to the technical field of soil improvement and conditioning methods, and in particular relates to a composition for regulating soil acidity and its application. Background technique [0002] Due to the high temperature and rainy climate conditions, the strong leaching effect makes the soil in the tropical and subtropical regions of southern my country generally acidic (Zhao Qiguo et al., 2002. Science Press). In recent years, acid deposition and excessive application of ammonium nitrogen fertilizers in agricultural production have greatly accelerated the rate of soil acidification (Guo et al., 2010. Science, 327: 1008–1010.). The low pH and aluminum toxicity caused by accelerated soil acidification seriously endanger the growth of crops on this type of soil, resulting in poor growth, yield and quality of crops. At present, in view of the hazards of soil acidity, the traditional improvement method is to use alkaline substances suc...

Claims

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Application Information

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IPC IPC(8): C09K17/02C09K109/00
CPCC09K17/02C09K2109/00
Inventor 时仁勇徐仁扣李九玉邓开英
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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