How to use herbicides in rice fields?

How to use herbicides in rice fields? What if there is a drug damage? Hope that experienced netizens can help introduce the methods of applying herbicides in rice fields and the identification and remediation of herbicides in paddy fields, which are listed below for netizens' reference. Methods of using herbicides in paddy fields: the common feature of chemical herbicides is that they are strong in killing weeds when the temperature is high, and vice versa. Therefore, the application of herbicides in early rice field should be about 15 days after transplanting, and that of middle rice and late rice should be 4-6 days after transplanting. The correct method is: after choosing sunny dew to dry, use 25% herbicide 500 grams 600 grams per mu, or 25 percent herbicide 300 grams plus pentachlorophenol sodium 500 grams, or 50 percent herbicide EC 250 grams 300 grams, mix well with 15 kilograms of wet fine soil, pile up for half a day, and then sprinkle it evenly into the rice field. Do not drain the field within a week and keep the water depth 3cm to 6cm. This method has a good effect on barnyardgrass and cottongrass, but it has no effect on weeds such as Trigonium, Hedyotis diffusa, Pleurotus ostreatus and so on. Therefore, for these weeds, 70% dimethyltetrachloride 75 ~ 100 grams per mu and 40 kg of water can be sprayed on the second day after the paddy field water is drained, and then irrigated every other day. After transplanting seedlings for half a month, some rice fields are easy to grow malignant weeds such as Eye vegetables (also known as bamboo leaves). When it grows 3-5 leaves, use 50% promethazine 40-50 grams per mu, wet fine soil 15 kilograms, spread, keep 3-6 centimeters water depth for 7 days, the effect is better. You can also use Pocaojing 40 grams plus 70% dimethyl tetrachloride 100 grams, mixed with wet fine soil 15 kilograms, sprinkle. This method can not only kill Eye grass, but also kill weeds such as Rizhao Buddha grass, knot grass, duck tongue grass, wild mushroom, wild shepherd shepherd seedling and so on. Symptoms of herbicide damage occurred in paddy fields: Rice seedlings were burned like fire, some could not heading normally, some could not bear fruit. The causes of drug damage are as follows: the area of rice field is too large, which leads to uneven application, filling poisonous soil with bamboo dustpan and so on, and leakage of medicine and soil, uneven tillage or leakage of rice field, flooding seedlings or increasing concentration of medicine, and so on. Remedial measures for herbicide damage to rice: method 1. The withered seedlings are mostly caused by excessive dosage, so the potion should be released from the field immediately and washed with clean water. Method 2. Serious drug damage was sprayed with 50 kilograms of quicklime or plant ash per mu, and foliar spray of 1% bleach solution was used for minor drug damage. Method 3. After adopting the above measures, if the seedlings still can not resume their growth, they can be replanted, and those who can not be replanted can be increased by 5kg urea per mu. Click to get more rice planting techniques click to get more food crop planting techniques