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Method for improving acid rice soil through union of hydrochar and biogas slurry

A hydrothermal charcoal and paddy soil technology, which can be used in land preparation methods, liquid fertilizers, fertilizer mixtures, etc., can solve the problems of low productivity, restricting the development of agricultural production, and difficult farming management, so as to promote utilization and solve harmless digestion. The effect of accepting and promoting promotion

Inactive Publication Date: 2020-08-25
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the abundant rainfall, high temperature and strong soil leaching in southern my country, there are obstacles such as acidity, stickiness, board, and thinness in the rice soil. The productivity is low, and the farming management is difficult, which seriously restricts the development of agricultural production in this region.

Method used

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  • Method for improving acid rice soil through union of hydrochar and biogas slurry
  • Method for improving acid rice soil through union of hydrochar and biogas slurry
  • Method for improving acid rice soil through union of hydrochar and biogas slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Improvement effect of pot experiment on acidic paddy soil in Quzhou, Zhejiang: using randomized block experiment design, the amount of biogas slurry (S 0 : No application of biogas slurry, S 1 : Apply 40ml of biogas slurry per kg of soil (dry weight) (equivalent to 6t of biogas slurry per mu), S 2 : 80ml of biogas slurry is applied per kg of soil (dry weight) (equivalent to 12 t of biogas slurry per mu), and the addition of pig manure hydrothermal charcoal (B 0 : Accounting for 0% of soil dry weight (without applying hydrothermal charcoal), B 1% : Accounting for 1% of dry soil weight (equivalent to applying 1.5 t of hydrothermal charcoal per mu), B 2% : Accounting for 2% of dry soil weight (equivalent to applying 3 t of hydrothermal charcoal per mu) and B 3% : Accounting for 3% of the dry weight of the soil (equivalent to applying 4.5 t of hydrothermal charcoal per mu), a total of 12 treatments and 3 repetitions. 5kg of acidic paddy soil passed through a 2mm sieve a...

Embodiment 2

[0065] Fertilization test effect of acidic rice fields in Quzhou, Zhejiang: split-plot experiment design was used for the experiment, and the main area was biogas slurry application rate (S 1 : No application of biogas slurry, S 2 : 12t / mu of biogas slurry), the auxiliary area is pig manure hydrothermal carbon application (B 0 :: No application, B 1% : 1.5t / mu, B 2% : 3t / mu and B 3% : 4.5t / mu) 8 treatments in total, repeated three times, plot area 30m 2 (5m x 6m). According to the demand for nitrogen in the whole growth period of rice (180kg / hm 2 ) and the average nitrogen content of the biogas slurry (0.1%). The amount of biogas slurry added is determined to be 12 t / mu. Since the content of nitrogen and potassium elements in the biogas slurry is relatively high, while the content of phosphorus is relatively low, the treatment of using biogas slurry Superphosphate (12%P 2 o 5 ) The amount is 50 kg / mu. Pig manure hydrothermal charcoal and superphosphate are used as bas...

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Abstract

The invention discloses a method for improving acid rice soil through united use of hydrochar and biogas slurry. According to the method, hydrochar is prepared through breeding waste biomass; and theacid rice soil is improved through synergism of biogas slurry generated through anaerobic fermentation in a breeding farm so as to increase the pH value of the acid soil, reduce exchangeable H<+> andAl<3+> of the soil, promote soil aggregate structures and achieve the purposes of adjusting the pH value of the acid rice soil and promoting fertility. Through the adoption of the method disclosed bythe invention, massive breeding waste biomasses can be consumed, continuous degeneration of the acid rice soil can be restrained, a part of chemical fertilizer for application is replaced for timely complementing a part of nutrient substances of the soil, and the method has multiple efficacy for improving the acid rice soil, enhancing soil fertility, promoting resource utilization of breeding waste and normal operation of methane engineering, promoting prevention and control of agricultural pollution in the countryside and the like, and is good in maneuverability and convenient for extensive large-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a method for improving acidic paddy soil by combining hydrothermal charcoal and biogas slurry. Background technique [0002] Anaerobic fermentation of livestock and poultry manure will produce a large amount of biogas slurry, which cannot be directly discharged into the environment. The construction of post-treatment facilities to meet the standards will greatly increase the construction and operation costs, so there is a serious problem of digestion. However, biogas slurry is rich in Nitrogen, phosphorus, potassium, amino acids, rich trace elements, B vitamins, various hydrolytic enzymes, organic acids and humic acids and other biologically active substances are good organic fertilizers, stimulating crop growth, enhancing crop resistance and Improve product quality. The use of biogas slurry as organic fertilizer can realize the secondary utilization of reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01B79/02C05G3/80C05G5/20
CPCA01B79/00A01B79/02C05D9/00
Inventor 柴彦君单胜道李子川平立凤张昌爱李艳
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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