Multifunctional soil maturing agent and preparation method thereof

A curing agent and multi-functional technology, applied in the field of multi-functional soil curing agent and its preparation, can solve the problems of shortening the composting time and speeding up the composting process, and achieve the effect of solving odor, broad market prospect and large specific surface area

Inactive Publication Date: 2012-09-19
NANJING AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing problems, the object of the present invention is to provide a multifunctional soil curing agent, which utilizes the characteristics of bio-black charcoal, such as adsorption, loose porosity and stable properties, to mix and compost bio-black charcoal with livestock and poultry manure, Fermentation, reducing the nutrient loss of livestock and poultry manure composting in farms; solving the problem of composting odor; shortening the composting time and speeding up the composting process

Method used

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  • Multifunctional soil maturing agent and preparation method thereof
  • Multifunctional soil maturing agent and preparation method thereof
  • Multifunctional soil maturing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Collect pig manure from pig farms, air-dry to make the water content less than 40%, and remove large debris. Then mix the bio-black carbon with pig manure, the weight ratio is 10:3, stir evenly, adjust the carbon-nitrogen ratio to be between 25-35, and the water content to be about 60%.

[0026] For composting, the surface is covered with a thin layer of bio-black carbon, and fermented at 30-50°C for 6 weeks; in the first 20 days of composting, turn the compost every day to maintain sufficient oxygen, and at the same time keep the moisture content at 60%. Turn the pile every three days for 30 days, and then turn the pile once a week. At the same time, it is sun-proof and anti-drain; the odor is significantly reduced after 4 days of composting.

[0027] The comparison of each physical and chemical index of the organic fertilizer prepared in embodiment 1 and the national standard is shown in Table 1:

[0028] Table 1

[0029] indicators

[0030] It can be see...

Embodiment 2

[0031] Embodiment 2 Comparison of composting time and temperature

[0032] The mixture obtained in Example 1 was composted, and a control group was set up by a traditional method.

[0033] Check the temperature of the compost heap daily (see figure 1 ), the temperature of the treatment group rose significantly faster than that of the control group. On the third day, the temperature of the treatment group reached the highest temperature of 55°C, while that of the control group reached the highest temperature of 35°C after 10 days. During the decomposing period, the temperature will basically remain unchanged in about 40 days, which is not much different from the room temperature, while the control group will take more than a week to basically reach the decomposing period.

Embodiment

[0034] Comparison of the Greenhouse Gases Produced by the Composting Process in Example 3

[0035] The mixture obtained in Example 1 was composted to measure the greenhouse gases produced, and a control group was set up by the traditional method.

[0036] The measurement frequency is: once a day for 10 days before composting, and once every 5 days thereafter;

[0037] The measurement item is: N 2 O, CH 4 , CO 2 .

[0038] see results figure 2 : N generated by the processing group 2 O is less than the control group, and the generated CH 4 is also significantly smaller than that of the control group, and the CO produced 2 higher than that of the control group. It shows that the microorganisms in the treatment group perform aerobic respiration, and at the same time, because the activity of microorganisms is greatly improved, they can accelerate the decomposition of organic substances, so they can produce more CO 2 , which is why the treatment group shortens the composti...

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Abstract

Disclosed are multifunctional soil maturing agent and a preparation method thereof. The soil maturing agent comprises biochar and poultry excrement in a weight ratio of 10:3-10:5. The preparation method includes: mixing the biochar and the poultry excrement proportionally, well mixing, and adjusting water content to about 60%; and covering the mixture with a thin layer of biochar, turning compost each day 20 days before composting, keeping the water content of 60% unchanged, turning the compost once every three days from the twentieth day to the thirtieth day, turning the compost once a week, and avoiding sunlight and rain. The compost is made of mixture of biochar and farm poultry excrements such as pig excrement. The problems of odor, long formation time and low fertilizer efficiency of traditional compost are solved. The poultry excrements can be also be used fully, and waste is turned into wealth. Composted products can be used as oil conditioner / maturing agent and gardening medium. The multifunctional soil maturing agent has promising market prospect.

Description

technical field [0001] The invention relates to a multifunctional soil curing agent prepared from agricultural waste and a preparation method thereof. technical background [0002] With the rapid development of my country's livestock and poultry breeding industry, the business model has gradually changed from scattered farming by farmers to large-scale and intensive farms. Da (Dong Keyu 1998); the transfer of livestock and poultry farms from rural areas and pastoral areas to the suburbs of cities has resulted in a disconnection between farming and animal husbandry, resulting in a large number of localized breeding wastes that cannot be properly treated and cause pollution; and traditional organic fertilizers are gradually being used. Instead of chemical fertilizers, a large amount of livestock and poultry manure was piled up randomly and could not be returned to the field in time, which aggravated the pollution of the agricultural environment. Due to the above reasons, livest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 付嘉英潘根兴李恋卿刘福礼张旭辉郑聚峰郑金伟
Owner NANJING AGRICULTURAL UNIVERSITY
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