Method for biological prevention and control of rice field diseases

A biological control and paddy field technology, applied in the field of pathogens and biological control of paddy field diseases, can solve problems such as the safety of chemical agents and the sustainability of disease prevention, and achieve the goal of reducing the dosage of chemical pesticides, strengthening disease resistance, and reducing morbidity. Effect

Active Publication Date: 2019-01-11
SHANGHAI ACAD OF AGRI SCI +2
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  • Claims
  • Application Information

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Problems solved by technology

The above methods are mainly physical prevention and control methods based on chemical agents, which can achieve certain eff

Method used

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  • Method for biological prevention and control of rice field diseases

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Embodiment 1

[0047] In Xixin Village, Sanxing Town, Chongming District, Shanghai, the rice blast in the rice fields of the current season was severely affected, and the rice output of the current season was 20% lower than that of previous years. After harvesting the rice of the current season in the diseased paddy field, return the straw to the field and plow it. When returning the straw to the field, use the straw harvester to crush the straw. The crushed length of the straw is 5-10cm, and the full amount is returned to the field. At the same time, the plow is plowed, and the plowing depth is 20-25cm. agent, the spreading rate is 40-50kg / mu. In addition, put earthworms in the diseased rice fields. The species of earthworms is the upper-feeding and lower-dwelling type. The amount of earthworms released is 200 kg per mu. -3t. After the straw is returned to the field and the earthworms are put in, the paddy field soil is watered once, and the water content of the farmland soil is kept at 4...

Embodiment 2

[0049] In Xixin Village, Sanxing Town, Chongming District, Shanghai, the sheath blight disease occurred seriously in the rice fields of the current season, and the rice output of the current season was 25% lower than that of previous years. After harvesting the rice of the current season in the diseased paddy field, return the straw to the field and plow it. When returning the straw to the field, use a straw harvester to crush the straw. The crushed length of the straw is 6-8cm, and the full amount is returned to the field. At the same time, the plowshare is plowed, and the plowing depth is 22-24cm. agent, the spreading rate is 42-48kg / mu. In addition, put earthworms in the diseased paddy fields. The species of earthworms is the upper-feeding and lower-dwelling type. The amount of earthworms released is 100 kg per mu. -2t. After the straw is returned to the field and the earthworms are put in, the paddy field soil is watered once, and the water content of the farmland soil i...

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Abstract

The invention provides a method for the biological prevention and control of rice field diseases. The method comprises the steps of (1) performing straw returning and plowing with a furrow plow on a rice field and placing earthworms, and (2) sowing grass on the rice field, then ploughing the grass into the field, and planting rice in the season. The invention provides the method for the biologicalprevention and control of rice field diseases, while the earthworms are placed in a disease rick field, the matched agronomic technique is employed, certain specific crops are planted, the mycelium and sclerotia of fungal diseases such as rice blast and banded sclerotial blight can be eliminated or reduced at the source of soil, the conidial germination is inhibited, and therefore, the purposes of controlling the rice field diseases and reducing the amount of chemical pesticides are achieved.

Description

technical field [0001] The invention belongs to the technical field of biological prevention and control of plant protection, specifically belongs to the technical field of biological prevention and control of rice fungal diseases in ecological agriculture, relates to a method for biological prevention and control of rice field diseases, and specifically relates to a method for planting ryegrass or alfalfa by using earthworm activities A method for reducing pathogens such as sheath blight and rice blast in rice fields. Background technique [0002] Rice cultivation has a long history. With the development of modern agriculture, rice breeding technology, cultivation technology, fertilization technology and pest control technology have been greatly developed. However, rice diseases, especially fungal diseases such as rice blast and sheath blight Control technology is still a thorny problem. Rice blast is one of the important diseases of rice, which occurs in every rice area i...

Claims

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Application Information

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IPC IPC(8): A01G13/00A01G22/00A01G22/40A01G22/22A01K67/033A01B79/02
CPCA01B79/02A01G13/00A01G22/00A01G22/22A01G22/40A01K67/0332
Inventor 李双喜吕卫光陶晓斌郑宪清张惠兰张娟琴张翰林白娜玲
Owner SHANGHAI ACAD OF AGRI SCI
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