1, closed treatment, 35% bensulfuron-methyl. Spray 80g/ mu of pretilachlor wettable powder with water, and apply it 2-4 days after rice sowing, that is, after the seedlings take root, drain water when applying it, but the humidity in the field must be maintained. After application, it can be irrigated after 24 hours to prevent surface cracking, and it will be managed normally after 3 days. It has a good control effect on barnyard grass, Gramineae and broad-leaved weeds.
2. Stem and leaf treatment: After the third leaf stage of seedlings, 30g of 75% quinclorac was sprayed with 15kg water, which was highly effective for barnyard grass and gramineous weeds. If there are broad-leaved weeds and gramineous weeds in the field, 20 grams of 10% pyrazosulfuron can be mixed. Drain the water before application, and then irrigate it after 24 hours.
3. It can be sprayed with 60 ml/mu of Doggering (penoxsulam) mixed with 30 kg of water at the 2-leaf stage of rice. When it is used, it is not necessary to drain water, but it is required that more than 2/3 of the stems and leaves of weeds are exposed in water, and it is better to irrigate 24 hours after application and keep water for 5-7 days. The control effect of this medicine on Euphorbia Euphorbia is slightly poor, and other weeds are well controlled.
4. If there are Spatholobus suberectus seeds, barnyard grass and some malignant gramineous weeds in the rice field, it is really difficult to control them. You can use 15% cyhalofop-butyl 80- 100 ml to spray the stems and leaves with 30kg of water, and ask the rice to be used after the third leaf stage, drain water during use, irrigate 24 hours after use, and keep water for more than 7 days. The effect is absolutely good.
After all the above methods and chemicals have been used, I will make sure that all weeds in your rice fields are cleared.
Finally, in order to be safe and efficient, please use herbicides in strict accordance with the above (or packaging instructions)
It is suggested that 10% bispyribac-sodium sodium should be used to control gramineous weeds resistant to long-term use of quinclorac.