How to remove rice fragrant aconite? Method for controlling rice aconite
The fragrant aconite is a sedge herb, also known as the sapling, etc. It is mainly propagated by tubers and seeds and is harmful in various parts of the country. Mainly in cotton, soybeans, corn, peanuts and other dry fields. The seedling period is about 2-4 months, and the flowering period is from May to September. Therefore, rice fields are rarely seen.
If the rice field fragrant aconite, it should be said that other weeds in the sedge family, among which the water sedge is more likely, perennial herbs, flowering fruit from July to October, seedling period from April to June, root-like tubers and Seed reproduction is the main weed in rice fields.
Therefore, the following measures should be taken to control the perennial sedge weeds such as paddy sedge:
1. Soil sealing treatment
2-3 days after germination of rice, 10 grams of 10% pyrazosulfuron-methyl or 10 kg of bensulfuron-methyl combined with water sprayed to seal.
Or 5-7 days after transplanting rice, use 15% oxysulfuron 10-15g mixed with 15-20 kg of fine sand or fine soil to evenly spread it. You can also choose other chemicals such as rice or chlorpyrifos. Can be flexibly selected according to local conditions.
After the live field is closed, the field will be kept wet for 3-4 days, and then the normal field tube will be avoided to avoid water accumulation. After the application of the transplanted field, the field will maintain a 3-5 cm water layer for 5-7 days.
2, post-emergence stem and leaf treatment
Generally, after the four-leaf stage of rice, the sedge of the sedge of the sedge in the field, the three-leaf stage of the sedge weeds, 48% of the herbicide 150-200 ml or 10% of the pyrazosulfuron 20 g plus 10% bispyribyl ether 10-20 g. , or 9.5% propisulfuron 40-60 ml mixed with water 30-45 kg, and then sprayed on the dry field water, etc., and the shallow water is kept for 2-3 days after the medicine.
It can also be used as a medicament such as bicyclosulfonone, dimethylformin or chlorpyrifossulfonate, and can be flexibly selected in combination with local drugs and drug resistance.
Note that alternate rotation agents, appropriately increased or decreased depending on the specific amount of resistance, and grass weeds local size of age, while the drug to strengthen field management, good sealing effect of the drug should be promptly defense in addition, serious plots should occur year round Closed and used in combination with seedlings.
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