Machine-inserted rice fields are enclosed, usually after the seedlings have been transplanted for 3-5 days with a soil-enclosing treatment agent mixed soil or fertilizer applied. However, during the actual operation, due to difficulties in maintaining seedling age, planting time, and rice transplanting time, it is often the case that the plots and the seedlings are ready and the rice transplanter is not yet in place, thus delaying the timing of the application of the herbicide and affecting the weed control effect. From the practice in recent years, there are two peaks of weeding in the machine-inserted paddy fields, and according to the law of grassing, we can use the fast series of herbicides twice to close them, which can effectively improve the weeding effect.
The first time the peak of grassing occurred 3-5 days after site preparation. For grasses and broad-leafed grasses, with less lime and gold, combine with mud sedimentation. After the flattening of the field, use a double super 53% benzylpyridinium thiophene wettable powder 60-80 grams per acre. Or 30-50 kilograms of moist fine soil spread evenly, after the drug to maintain a 3 cm deep layer of water, water 5-7 days. For blocks with a large base number, it is recommended to use up to 35% besiprofen wettable powder 100-120 grams per acre, 30-50 kilograms of basal dressing or wet fine soil, and 3 cm deep after medicine. The water layer retains water for 3-4 days.
The second peak in the grass is 10 to 15 days after transplanting. Can use double super 53% benzylpyridinyl thiophene wettable powder 60-80 grams or Bangnong Le 69% benzylpyrimidine thiophene wettable powder 50-60 grams, mixed with green manure or wet fine soil 30-50 kilograms Disperse evenly. After the medicine, keep a 3 cm deep water layer and keep it for 3 to 4 days.