Novel method for prevention and control of older rice barnyard grass in paddy rice fields

A paddy field and new method technology, applied in botany equipment and methods, herbicides and algicides, chemicals for biological control, etc., can solve the problems of high drug input costs, rice and soil pollution, and rice safety Low-level problems, to achieve the effect of reducing resistance and the frequency of weeds, reducing residual activity, and expanding the range of herbicides

Inactive Publication Date: 2019-07-23
王贵申
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The herbicides in the prior art have low safety to rice, and have dominant and recessive phytotoxicity, pollute rice and soil, and have high drug input costs

Method used

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  • Novel method for prevention and control of older rice barnyard grass in paddy rice fields
  • Novel method for prevention and control of older rice barnyard grass in paddy rice fields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, the new method for preventing and controlling barnyardgrass of paddy fields provided by the embodiment of the present invention includes:

[0056] S101: Take 70 grams of 30% barnyard phosphorus, add 50-70 grams of 50% quinclorac suspending agent or wettable powder, mix with 70-100 ml of super high-efficiency spray adjuvant, and use it on barnyard grass with a plant height of 15-30 After removing the water layer or keeping it dry naturally, use a knapsack electric sprayer or a plant protection drone to spray.

[0057] S102: The amount of liquid sprayed per mu (667 square meters) is 10-12 kg / mu.

[0058] S103: Return to normal water management about 36 hours after spraying, use fan-shaped nozzles during operation, and the spray droplets are fine and even.

[0059] The formula of the present invention not only controls old barnyardgrass and rice barnyardgrass, but also controls perennial deep-rooted vicious weeds "reeds" in paddy fields. The c...

Embodiment 2

[0061] The new method for preventing and controlling barnyardgrass of older rice in paddy fields provided by the embodiments of the present invention includes:

[0062] Take 70 grams of 30% barnyard phosphorus, add 50% quinclorac suspension concentrate or wettable powder 50-70 grams;

[0063] Mix 70ml of super-high-efficiency spray adjuvant, and spray after the barnyardgrass plant height is 15-30 cm, remove the water layer or keep it dry naturally; the spray volume is 10-12 kg / mu.

[0064] Return to normal water management 36 hours after spraying.

Embodiment 3

[0066] The new method for preventing and controlling barnyardgrass of older rice in paddy fields provided by the embodiments of the present invention includes:

[0067] In barnyardgrass or rice barnyardgrass with a plant height of 15 cm and at the 5th leaf stage, take 50 grams of 30% barnyard phosphorus, 60 grams of 50% quinclorac suspension concentrate or wettable powder, and a special mixture of alkyl ethyl sulfonate. High-efficiency spray adjuvant 70ml mixed;

[0068] After the barnyardgrass plant height is 15 cm, remove the water layer or keep it dry naturally, and then spray.

[0069] The amount of liquid sprayed is 10 kg / mu per mu; normal water management will resume 36 hours after spraying.

[0070] In normal water management, the water layer is 3 cm, and the water retention layer is 7 days.

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Abstract

The invention belongs to the technical field of prevention and control of barnyard grass in paddy rice fields, and discloses a novel method for prevention and control of older rice barnyard grass in paddy rice fields. When barnyard grass or echinochloa crusgalli has a plant height of 15-30 cm and is in a leaf age stage of 5-7, mixing 50-70 grams of 30% anilofos, 60-80 grams of a 50% quinclorac suspension or wettable powder and 70-100 ml of an alkyl ethyl sulfonate mixed efficient spray additive; and when the barnyard grass has a plant height of 15-30 cm, a water layer is removed or kept dry naturally, and then spraying is carried out. After the water layer is removed or kept dry naturally when the barnyard grass has a plant height of 15-30 cm, the amount of liquid spray is 10-12 kg/mu, andnormal water management is recovered about 36 hours after the spraying. The novel method of the invention is superior to paddy rice field post-emergence stem and leaf treatment herbicides ''molinate'' or ''penoxsulam'' imported from the United States, is highly safe to paddy rice, and has no obvious and hidden phytotoxicity, no pesticide residue to rice and no soil pollution.

Description

technical field [0001] The invention belongs to the technical field of barnyardgrass prevention and control in paddy fields, and in particular relates to a new method for preventing and controlling barnyardgrass of older rice in paddy fields. Background technique [0002] Currently, the closest prior art: [0003] Due to the low temperature in spring every year, (cold in late spring) when rice is transplanted and herbicides are closed and herbicides are selected or used improperly, barnyardgrass or rice barnyardgrass cannot be effectively controlled in the early stage, and it has exceeded the age of general herbicides to kill the leaves, making it develop into older resistant herbicides. Sexual weeds may be transformed into vicious weeds. When the plant height is 15-30 cm and the age of 7 leaves is above, the paddy field has formed a grass shortage, which poses a serious threat to the growth of rice. [0004] In summary, the problems in the prior art are: [0005] The herb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/14A01N43/42A01N25/06A01P13/00
CPCA01N25/06A01N43/42A01N57/14
Inventor 王贵申
Owner 王贵申
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