Stone brother issued a micro-letter on November 4: What is this grass, in the rape field can use what medicine control?
Tan Liyun: This is mother-in-law. The mother-in-law Nasheng is more difficult to remove in rapeseed fields. Currently, the herbicides used to control broad-leaved weeds in rapeseed fields are grass herbicide and clopyralid. The two drugs have poor control effect on mother-in-law. The use of grass in addition to the spirit of anti-controlling a certain degree of control effect, can be timely in addition to 20 grams of grass pure spiritual medicine.
Grass herbicides are generally applied during the 6-8 leaf stage of live rapeseeds or after transplanting rape seedlings and broadleaf weeds. According to the type of weeds in the field, the amount of pesticides is determined. In the fields of bracken grass, cattle breeding, and fanfication, 30% of herbicides are used per acre for 50-60 ml, and 30-40 kg of water is evenly sprayed; For swine fever, the dosage should be appropriately increased. For each mu, use 30% herbicide to remove 70-80 ml of suspension agent and add 30-40 kg of water evenly. After weeding, weeds are transported through the leaves and transported to the entire plant body. Sensitive weeds are arrested by phytotoxicity, the leaves are green, thick and unwound, the new leaves are twisted, the internodes are shortened, and finally die, and the hormone herbicides are killed. The symptoms are similar. The temperature is high and the temperature is low. The efficacy increased with increasing dose. After spraying, oilseed rape sometimes has symptoms of different degrees of injury, leaf wrinkles, with the increase in dose of drug symptoms appear more obvious, under normal circumstances can be restored after 20 days. The rapeseed rape has high safety and mild phytotoxicity to the cabbage rape. The mustard rapeseed is highly sensitive and cannot be used.
Medical Consumables and Accessories
Medical Consumables and accessories
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