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Granular southern paddy field acid soil conditioner using rice husk as matrix

An acid soil, granular technology, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of not being able to fundamentally regulate the acid soil of paddy fields, and not be able to supplement effective silicon, and achieve the benefits of root activity and efficiency. The effect of absorbing nutrients, increasing soil porosity, strong water absorption and water retention performance

Active Publication Date: 2017-12-01
INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology does not cause the soil structure to deteriorate while improving the acidic paddy soil, but the soil conditioner cannot provide sufficient calcium, magnesium, potassium and other basic ions and the acid ion Al in the soil. 3+ and H + For effective exchange, at the same time, it cannot supplement available silicon, so it cannot fundamentally regulate the acidic soil of paddy fields

Method used

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  • Granular southern paddy field acid soil conditioner using rice husk as matrix
  • Granular southern paddy field acid soil conditioner using rice husk as matrix
  • Granular southern paddy field acid soil conditioner using rice husk as matrix

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Effect test

Embodiment 1

[0040] The present embodiment provides a granular acidic soil conditioner for paddy fields in the south with rice husk as the substrate, and its raw material components include:

[0041] Carbonized chaff, 33 parts by weight;

[0042] Rice husk silica, 12 parts by weight;

[0043] Fly ash, 15 parts by weight;

[0044] Silicon calcium magnesium phosphorus potassium fertilizer, 30 parts by weight;

[0045] Anionic polyacrylamide (molecular weight is 3,000,000), 2 parts by weight;

[0046] Attapulgite powder, 2 parts by weight;

[0047] Wherein, described carbonized chaff adopts following method to prepare:

[0048] carbonize the chaff at 500°C for 6 hours, ventilate and cool to room temperature to obtain the carbonized chaff;

[0049] Described chaff silicon alkali adopts following method to prepare:

[0050] Adding a concentration of 20wt% NaOH solution to the carbonized chaff in the reaction kettle, controlling the mass ratio of the carbonized chaff to the sodium hydroxid...

Embodiment 2

[0055] The present embodiment provides a granular acidic soil conditioner for paddy fields in the south with rice husk as the substrate, and its raw material components include:

[0056] Carbonized chaff, 30 parts by weight;

[0057] Rice husk silica, 12 parts by weight;

[0058] Fly ash, 18 parts by weight;

[0059] Silicon calcium magnesium phosphorus potassium fertilizer, 27 parts by weight;

[0060] Anionic polyacrylamide (molecular weight is 4,000,000), 7 parts by weight;

[0061] Bentonite, 6 parts by weight;

[0062] Wherein, described carbonized chaff adopts following method to prepare:

[0063] Carbonize the chaff at 600°C for 4 hours, ventilate and cool to room temperature to obtain the carbonized chaff;

[0064] Described chaff silicon alkali adopts following method to prepare:

[0065] Adding a concentration of 10wt% NaOH solution to the carbonized chaff, controlling the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:5, boiling an...

Embodiment 3

[0070] The present embodiment provides a granular acidic soil conditioner for paddy fields in the south with rice husk as the substrate, and its raw material components include:

[0071] Carbonized chaff, 38 parts by weight;

[0072] Rice husk silica, 10 parts by weight;

[0073] Fly ash, 17 parts by weight;

[0074] Silicon calcium magnesium phosphorus potassium fertilizer, 24 parts by weight;

[0075] Anionic polyacrylamide (molecular weight is 4.5 million), 4 parts by weight;

[0076] Bentonite, 10 parts by weight;

[0077] Wherein, described carbonized chaff adopts following method to prepare:

[0078] Carbonize the chaff at 550°C for 5 hours, ventilate and cool to room temperature to obtain the carbonized chaff;

[0079] Described chaff silicon alkali adopts following method to prepare:

[0080] Add NaOH solution with a concentration of 7wt% to the carbonized chaff, control the mass ratio of the carbonized chaff to the sodium hydroxide solution to be 1:7, boil and k...

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Abstract

The invention provides a granular southern paddy field acid soil conditioner using rice husk as a matrix, wherein the raw materials comprise 25-38% of carbonized rice hull, 10-20% of rice hull silicon-alkali, 14-25% of fly ash, 28-40% of silicon-calcium-magnesium-phosphorus-potassium fertilizer, and 2-8% of polyacrylamide. According to the present invention, the conditioner can obviously reduce the bulk density of the soil, can increase the soil porosity and the proportion of large aggregates, can effectively prevent soil from hardening, and can provide a large amount of Ca<2+>, Mg<2+>, K<+> and other salt-based ions so as to perform equal exchange with H<+>, Al<3+> and other acid forming ions adsorbed by soil colloids, wherein the exchanged H<+> and the Al<3+> are neutralized and precipitated with the OH<-> carried by the conditioner and the OH<-> released by the active silicon hydrolysis, such that the problems of acidity and toxicity of paddy field acid soil are fundamentally solved.

Description

technical field [0001] The invention relates to a granular southern paddy field acidic soil conditioner with rice husk as a substrate, belonging to the technical field of soil improvement. Background technique [0002] Paddy field is the largest cultivated land resource in southern my country. However, under the action of desiliconization, iron-enrichment and aluminization, the silicon-aluminum ratio of soil clay particles gradually decreases, and the exchangeable Al 3+ A large amount of production leads to natural acidification of the soil and the formation of aluminum toxicity. In recent years, the excessive application of chemical fertilizers has caused the imbalance of soil nutrients in cultivated land, further accelerating the process of soil acidification. Data show that the area of ​​acidic cultivated land with pH < 5.5 has risen from 7% 30 years ago to 18%. Taking Hunan Province as an example, compared with the second soil census in 1980, the average pH value of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/04C09K101/00C09K109/00C05G3/80
Inventor 冀建华刘秀梅侯红乾刘益仁冯兆滨王子君
Owner INST OF SOIL FERTILIZER & RESOURCE ENVIRONMENT JIANGXI ACAD OF AGRI SCI
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