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Method for storing and utilizing biogas slurry of livestock and poultry by virtue of winter idle rice fields and management system

A biogas slurry and paddy field technology, which is applied in the field of sewage treatment and resource utilization, can solve the problems that the utilization of biogas slurry farmland cannot obtain the best use effect, affect the promotion and application of biogas slurry farmland utilization, and affect the enthusiasm of biogas slurry, etc., to achieve the best Utilization effects, stable, normal and natural crop growth, and effects that are conducive to application and promotion

Active Publication Date: 2019-01-04
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The use of livestock and poultry biogas slurry in farmland is an effective method of biogas slurry treatment, but there is a contradiction between the continuous production of biogas slurry and the periodic fertilizer needs of crops in the use of biogas slurry in farmland, especially in winter, most of the rice is directly in a state of idleness after harvesting. , a small number of winter crops planted in rice fields require less fertilizer, and livestock and poultry farms need to build a large number of liquid storage tanks to solve the storage problem of biogas slurry
In addition, due to the obvious differences in nutrient content of biogas slurry in different biogas projects and at different times, the use of biogas slurry in farmland is often due to inappropriate fertilization, resulting in crop fertilizer deficiency or excess nutrients, which affects the enthusiasm of farmers to use biogas slurry
Finally, livestock and poultry farms, biogas slurry transportation companies, and farmers are in a state of information islands with limited interconnection. The needs of farmers and biogas slurry usage information, the needs of biogas slurry transportation companies, and the needs of livestock and poultry farms Product supply information, the lack of a close management system among the three, resulting in the inability to obtain the best use effect for the use of biogas slurry farmland, which also affects the promotion and application of biogas slurry farmland utilization

Method used

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  • Method for storing and utilizing biogas slurry of livestock and poultry by virtue of winter idle rice fields and management system
  • Method for storing and utilizing biogas slurry of livestock and poultry by virtue of winter idle rice fields and management system
  • Method for storing and utilizing biogas slurry of livestock and poultry by virtue of winter idle rice fields and management system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for storage and utilization of livestock and poultry biogas slurry in idle paddy fields in winter, in which the biogas slurry produced in the biogas digester is directly stored or irrigated in the winter idle paddy fields after rice harvesting, and is repeatedly stored or irrigated after the paddy field biogas slurry dries up until Plant rice in the spring of the following year.

[0053]The method provided by the present invention is further set as follows: the biogas slurry is the biogas slurry in a biogas digester with normal gas production for more than three months, and the biogas residue content is less than 10%.

[0054] The method provided by the present invention is further set to: the biogas slurry includes: 0.02-0.3% ammonium nitrogen, 0.05-0.3 P 2 o 5 , 0.05-0.2% K 2 O.

[0055] The method provided by the present invention is further set to: the method steps are as follows:

[0056] Step 1. Select the paddy field, select the leisure paddy field ...

Embodiment 2

[0075] In combination with Example 1, the biogas slurry with good operation of the biogas project was selected, and the ammonium nitrogen content of the biogas slurry was determined to be 1563 mg / L. According to the standard that the ammonium nitrogen load of the paddy field did not exceed 150 kg / 667m², the calculated biogas slurry irrigation volume of the paddy field was 96 tons For example, when a 667 m² paddy field is irrigated to a depth of 10 cm, the irrigation volume is 66.7 tons, and the biogas slurry of this concentration can be irrigated to a depth of 14.4 cm, and the irrigation depth is 2 times in total. The first irrigation depth is 10 cm, and the second irrigation depth is about 4 -5cm. Select an idle paddy field, irrigate a thin layer of water, and pre-close the drainage holes of the paddy field. After 24 hours, tank trucks were used to transport the biogas slurry to the rice fields for irrigation. Before irrigation, insert 5 bamboo sticks in the middle and the p...

Embodiment 3

[0077] In combination with Example 1, the biogas slurry with good operation of the biogas project was selected, and the ammonium nitrogen content of the biogas slurry was determined to be 800 mg / kg. According to the standard that the ammonium nitrogen load of the paddy field did not exceed 150 kg / 667m², the amount of biogas slurry irrigation for the paddy field was calculated to be 300 For example, when a 667 m² paddy field is irrigated at a depth of 10 cm, the irrigation volume is 66.7 tons, then the biogas slurry with this concentration can be irrigated to a depth of 28 cm, and the irrigation depth is 3 times in total. The first and second irrigation depths are both 10 cm. The depth of three irrigations is about 8cm. Select an idle paddy field, irrigate a thin layer of water, and pre-close the drainage outlet of the paddy field. After 24 hours, tank trucks were used to transport the biogas slurry to the rice fields for irrigation. Before irrigation, insert 5 bamboo sticks i...

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Abstract

The invention discloses a method for storing and utilizing biogas slurry of livestock and poultry by virtue of winter idle rice fields and a management system. According to the method, biogas slurry produced in biogas tanks are directly stored in or used to irrigate winter idle rice fields after rice harvesting, and after the rice fields is dried, repeated storage or irrigation is carried out until rice is planted in spring of next year. The method can completely solve the contradiction between continuous production of the biogas slurry and periodic fertilizer requirement of crops by storing the biogas slurry of livestock and poultry in the idle rice fields in winter, and at the same time, can reduce the difficulty of utilizing the biogas slurry in farmland and improve the enthusiasm of farmers to use the biogas slurry. The management system provided by the invention exerts the technical advantages of an agricultural technology promotion department, breaks information isolation among the farmers, livestock and poultry farms, biogas liquid transportation companies and crop growth information, and comprehensively uniformly synergistically manages utilization of the biogas slurry in farmlands, enables the advantages of utilization of the biogas slurry in farmlands to be optimally achieved, realizes development of a planting-breeding coupling eco-circulating agricultural model in aregion, and promotes market-oriented promotion and application of utilization of the biogas slurry in farmlands.

Description

technical field [0001] The invention relates to the technical field of sewage treatment and resource utilization, in particular to a storage and utilization method and management system for livestock and poultry biogas slurry in idle paddy fields in winter. Background technique [0002] The use of livestock and poultry biogas slurry in farmland is an effective method of biogas slurry treatment, but there is a contradiction between the continuous production of biogas slurry and the periodic fertilizer needs of crops in the use of biogas slurry in farmland, especially in winter, most of the rice is directly in a state of idleness after harvesting. , a small number of winter crops planted in rice fields require less fertilizer, and livestock and poultry farms need to build a large number of liquid storage tanks to solve the storage problem of biogas slurry. In addition, due to the obvious differences in nutrient content of biogas slurry in different biogas projects and at diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01C21/00A01G22/22C12M1/107C12M1/00
CPCA01B79/02A01C21/00A01G22/22C12M21/04C12M23/02
Inventor 王强马军伟叶静俞巧钢孙万春邹平林辉陈照明
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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