Zhao Zhengcai, Jiqiao Town, Chuzhou City, Huai’an City, said on June 7 that rice seeds were mistakenly soaked with phopyri before sowing, and that 40 kg of rice seeds were soaked in 50 ml of 200 g/l chlorofluoroacetic acid for 48 hours. Rice can emerge after sowing, but the seedlings are not dwarfed and the leaves are light. He asked if the rice seedlings in this field were still useless and they had to be sown again. It is understood that fluoxypyranoacetic acid is a post-emergence, post-emergence herbicide that can be used to control broad-leaved weeds in wheat, barley, corn and other grass crops. It can also be used to control broad-leaved weeds in paddy fields. . Usually in the 2-leaf 1 heart stage of rice, 200 grams per liter of chlorofluoroacetic acid EC 50 ml of water and 30 kg of spray per acre. After the application of the drug, the drug can be quickly absorbed by the plant, so that the phytotoxicity of the hormone herbicide appears in sensitive plants, and the plant is deformed and distorted. When applied on rice, it sometimes causes the leaves to yellow and can recover quickly. According to Zhao Zhengcai, 40 kg of rice seeds were immersed in 50 ml of 200 g/l chlorofluoropyrbutoxychloric oil for 48 hours. After sowing, seedling growth was inhibited and the leaves were pale. It should have been harmed by chlorofluoropyr. Since the drug is mainly absorbed through the stems and leaves of the plant, the rice seeds do not have a small amount of drug absorbed before germination, and the seedling phenomenon will not appear, and the seedlings may not be sowed again. The spraying of foliar fertilizers containing humic acid on rice seedlings that are harmed by phytotoxicity can, to a certain extent, promote the recovery of the plants and alleviate the symptoms of drug damage.
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