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Crop compost and preparation method thereof

A crop and composting technology, applied in the field of crop resources, can solve the problems of low fertilizer efficiency of compost products, and achieve the effects of shortened composting cycle, low cost and high quality

Inactive Publication Date: 2015-08-19
SHANGHAI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, there are still key problems such as low fertilizer efficiency of composted products in agricultural waste composting products, and other fertilizers must be used in combination to meet the requirements of crop growth and development

Method used

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  • Crop compost and preparation method thereof
  • Crop compost and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The livestock and poultry manure used in this example is pig manure, and the crop straw is wheat straw, which are respectively taken from a pig farm and an experimental field of Zhuanghang Experimental Station in Fengxian District, Shanghai. Among them, the moisture content of pig manure was 85.0%, and the mass fraction of organic carbon was 34.4% on a dry basis; the moisture content of straw was 9.1%, and the mass fraction of organic carbon was 62.6% on a dry basis.

[0023] Cut the wheat straw into 18-20cm segments, and bundle them into the closed carbonization furnace (Zhejiang Wuneng Environmental Protection Technology Development Co., Ltd., model ECO-5000) in the Zhuanghang Experimental Station. The speed is 100℃·h -1 It was carbonized under the condition of 500°C and kept warm for 1 hour to obtain straw biochar, which was wheat straw charcoal, and the conductivity of the prepared wheat straw biochar was 7.9ms·cm -1 , pH value 5.5, water-soluble organic carbon con...

Embodiment 2

[0032] The livestock and poultry manure used in this example is pig manure, and the crop straw is wheat straw, which are respectively taken from a pig farm and an experimental field of Zhuanghang Experimental Station in Fengxian District, Shanghai. Among them, the moisture content of pig manure was 85%, and the mass fraction of organic carbon was 34.4% on a dry basis; the moisture content of straw was 9.1%, and the mass fraction of organic carbon was 62.6% on a dry basis.

[0033] Cut the wheat straw into 18-20cm segments, and bundle them into the closed carbonization furnace (model ECO-5000) in the Zhuanghang Experimental Station. -1 It was carbonized under certain conditions, raised to the final carbonization temperature and then kept for 1 hour to obtain straw biochar as wheat straw charcoal, and the conductivity of the prepared wheat straw biochar was 7.9ms·cm -1 , pH value 5.5, water-soluble organic carbon content 2.7g·kg -1 , Available phosphorus content 1100mg·kg -1 ,...

Embodiment 3

[0038] The livestock and poultry manure used in this example was pig manure, and the crop straw was rice straw, which were respectively taken from a pig farm and an experimental field of Zhuanghang Experimental Station in Fengxian District, Shanghai. Among them, the moisture content of pig manure was 85%, and the mass fraction of organic carbon was 34.4% on a dry basis; the moisture content of straw was 10.1%, and the mass fraction of organic carbon was 41.0% on a dry basis.

[0039] Cut the rice straw into 18-20cm segments, and bundle them into the closed carbonization furnace (model ECO-5000) in the Zhuanghang Experimental Station. -1 Carbonize it under certain conditions, raise it to the final carbonization temperature, and keep it warm for 1 hour to obtain straw biochar as rice straw charcoal. The conductivity of the rice straw biochar is 5.4ms·cm -1 , pH value 7.2, water-soluble organic carbon content 2.3g·kg -1 , Available phosphorus content 800mg·kg -1 , Nitrate nitro...

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Abstract

The invention discloses a crop compost and a preparation method thereof. The crop compost is prepared by the following method: (1) mixing manure, straw and straw charcoal in the weight ratio of 1:0.2:0.1:0.3; and (2) conducting composting fermentation on the mixed materials with ventilation rate of 0.01-0.05m<3>.h<-1>.kg<-1> for 14 to 20 days and discharging. The crop compost prepared by the invention is supplemented with straw charcoal, has significantly improved contents of water-soluble salt, total nitrogen and rapid available phosphorus and excellent fertilizer efficiency, and is applicable to farmland.

Description

technical field [0001] The field of crop resources of the present invention specifically relates to a crop compost and a preparation method thereof. Background technique [0002] The agricultural wastes in my country mainly include livestock and poultry manure and crop straws. In 2010, the discharge of livestock and poultry manure from large-scale farms in my country was about 2.23 billion tons, and it will reach 4.24 billion tons in 2020. The annual output of crop straw in my country is 700 million tons. Among them, rice, corn and wheat straw are the main ones, accounting for 75.6% of the total straw. The burning of a large amount of straw and the random stacking of livestock and poultry manure that has not been utilized as a resource cause environmental pollution and waste of resources. [0003] Livestock and poultry manure is fine in texture, rich in nitrogen, phosphorus and organic matter, but relatively low in carbon and nitrogen, 5-15. The main components of crop s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00
CPCY02W30/40
Inventor 张继宁周胜陈桂发孙会峰付子轼宋祥甫
Owner SHANGHAI ACAD OF AGRI SCI
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