Cai Changyong of Huaiyuan County, Anhui Province, said on April 13th that he had used tribenuron-methyl in a small wheat field after the spring of this year, and that most of the broad-leaved weeds in the field had died after the drug was applied. not dead. This grass is known locally as "Rarateng" and has long vines; the stems are thorny, and there are 4 cracks on the leaves, and the flowers are lightly colored. He asked what the scientific name of this grass is and what medicine should be used in the future.
From the perspective of the reaction, this difficult weed in wheat fields is grass. The grass, also known as larvae, is a common weed in farmland and wasteland. It grows around and grows. Because there are barbs on the stems and leaves, it is not convenient for manual removal.
According to Li Mei et al., Plant Protection Institute of Shandong Academy of Agricultural Sciences, fifteen broad-leaf herbicides such as oxathione and tribenuron-methyl were sprayed when spring grass was in the seedling stage and its stem length was 5-10 cm. , 7 days and 15 days after the drug treatment, death of grass withered by the fluoxetine treatment zone; death of 2,4-D-butyroate, 2,4-diethylhexyl ester, tribenuron-methyl treatment, yellowing of grass, serious distortion, and stopping Growth; Embryonic thioether treatment area? Grass blade leaf margin dry, heavy yellow, stop growing, some leaves completely dry, but the heart did not die, continue to grow in the later period; bensulfuron-treated area yellow grass, leaves Down ed; dicamba treatment area, severe dry grass roll, distorted heart; octanoyl bromoxylene, bromoxynil, flufenoxa treatment area pre-drugs? grass edge dry, but the heart damage is lighter, later to continue Growth; Chlorofluoropyroxyacetate, methyl oxalate, campestarizin, 2A 4 Cl, Atrazine treatment area grasses did not change, growth was partially inhibited. The survey data 30 days after the drug showed that the best control effect is oxathione, tribenuron-methyl, and 2,4-diethylhexyl ester, 2,4-dibutyl phthalate, Thiomitraz thioether, bensulfuron-methyl; atrazine, 2A, 4 chloro, dicamba have certain control effect on grass; bromoxynil, octanoic bromoxynil, methyl oxalate, flufenoxazone, chlorofluoride Pyridoxine has poor control of grasses.
Among the above-mentioned 15 kinds of medicaments, tribenuron-methyl, 2-methyl-4-chlorohexyl, 2-methylhexyl 4-methylhexanoate, bensulfuron-methyl, octyl bromoxylene, bromoxynil, and flufenoxime can be used for the removal of wheat. Fluroxypyr, camphor pine and so on. Farmers can rationally select drugs based on the proportion of grass in the field and the age of grass. In the case of large amounts of weeds and weeds in wheat fields, tribenuron-methyl, 2,4-diethylhexyl ester, and other drugs should be used.
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