Method for promoting crop straw to become efficiently decomposed by use of alkaline residues and application thereof

A technology of crop straw and alkali slag, applied in the direction of organic fertilizer, etc., can solve the problem of low utilization rate of straw and achieve the effect of improving the value of agricultural use

Inactive Publication Date: 2013-04-17
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Technical problem to be solved: Aiming at the problem of low utilization rate of crop straws at present, the present invention provides a method of using alkali slag to promote efficient decomposition of crop straws and its application in the treatment of rice and peanut straws

Method used

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  • Method for promoting crop straw to become efficiently decomposed by use of alkaline residues and application thereof
  • Method for promoting crop straw to become efficiently decomposed by use of alkaline residues and application thereof
  • Method for promoting crop straw to become efficiently decomposed by use of alkaline residues and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1 Materials and methods

[0022] 1.1 Test material

[0023] Rice straw is taken from Yingtan Red Soil Station in Jiangxi Province, which contains 403.79g / kg of carbon, 6.37g / kg of nitrogen, 0.88g / kg of phosphorus, and 21.21g / kg of potassium; 79.17g / kg, phosphorus 0.29g / kg, copper 12.03mg / kg, zinc 79.47mg / kg, cadmium 0mg / kg, the heavy metal content is far lower than the national soil environmental quality standard requirements; this experiment selects two kinds of compound bacterial agents for The tests were liquid EM bacteria and solid bacteria provided by Jurong Blue Sky Clear Water Company.

[0024] 1.2 Test method

[0025] In this experiment, a blank control, CK, and three levels of alkali slag additions were combined with two bacterial agents for a total of 9 treatments (Table 1). A constant temperature incubator was used for constant temperature ventilation at 30°C. First, adjust the water content of 80g of crushed rice straw to 65% with distilled water, and at ...

Embodiment 2

[0056] 1 Materials and methods

[0057] 1.1 Test material

[0058] Peanut straw is taken from Yingtan Red Soil Station in Jiangxi Province, which contains 359.86g / kg of carbon, 10.95g / kg of nitrogen, 1.54g / kg of phosphorus, and 14.81g / kg of potassium; 79.17g / kg, phosphorus 0.29g / kg, copper 12.03mg / kg, zinc 79.47mg / kg, cadmium 0mg / kg, the heavy metal content is far below the national soil environmental quality standards. In this experiment, solid bacteria were provided by Jurong Blue Sky Clear Water Company.

[0059] 1.2 Test method

[0060] In this experiment, five treatments including blank control, CK and three levels of alkali slag addition (Table 1) were set up, and a constant temperature incubator was used to cultivate at 30°C with constant temperature and ventilation. First, adjust the water content of 80g crushed peanut stalks to 65% with distilled water, at the same time add the bacteria agent and mix well, in order to achieve the best C / N required for microbial gro...

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Abstract

A method for promoting crop straw to become efficiently decomposed by the use of alkaline residues and an application thereof. The method provided by the invention comprises the following steps of: crushing the straw and adjusting the water content to 60-70 wt%, adding inocula with uniformly mixing, adjusting the carbon / nitrogen ratio to 20-30 by the use of urea, adding alkaline residues which account for 5-15 wt% of the above mixture, culturing the materials in airtight condition for 50-60 days, ventilating once three days for 5-15 minutes each time, and adjusting the water content within 60-70 wt% during the period. According to the test, peanuts and rice straw are used as raw materials, two inocula are selected, and different levels of alkaline residues are respectively added; the promotion effect of adding different levels of alkaline residues under the condition of constant temperature incubation on the efficient decomposition of straw is studied, so as to provide an appropriate chemical additive for the aerobic composting of straw and raise the agricultural utilization value of straw.

Description

technical field [0001] The invention belongs to the technical field of crop straw treatment, and in particular relates to a method and application of using alkali slag to promote the ripening of crop straw. Background technique [0002] my country produces about 700 million tons of crop straw every year, most of which are not effectively utilized. Composting is an effective way to utilize straw resources. In recent years, many scholars have sought ways to promote efficient composting and maturity of composting by improving the composting environment, adding substances, and applying bacterial agents. Research by Mu Kejun et al. showed that FeSO 4 The total nitrogen content of pig manure straw compost treated with additives increased by 5.3% relative to the blank control, NO 3 -N content increased by 969mg.kg -1 , has obvious nitrogen retention effect and improves the quality of compost. The inoculation agent can make the compost material reach high temperature quickly, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F11/02
Inventor 翟修彩刘明李忠佩
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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