How to use herbicides when growing onions

How to use herbicide when growing onions? Please advise that the planting area of onions and onions as spice crops is expanding. In the production of onions and onions, improper selection of herbicides often results in reduced yield or no harvest, and will leave residual poison to the following crops. In the pollution-free production of onions and onions, the skillful use of herbicides is very important. When raising onion seedlings, use 50% promethazine wettable powder 65-75 grams per mu to spray 40-60 kilograms of water. Onion seedlings can be raised with 33% herbicide EC 100 ml per mu, or 48% trimethamine EC 150 ml per mu, and 150 grams of 50% herbicide No. 1 wettable powder per mu, spraying 50 kg of water respectively. Onions can be sprayed with 66-72 ml of 24% fruit per mu or 80-100 ml of Hanchaoling with 43% per mu before transplanting after soil preparation. Onions can use 48% trifluralin EC 100-150 ml per mu, or 48% trimethoprim EC 200 ml per mu, or 50% Dahuili wettable powder 100-150 g per mu and spray 50-60 kg of water before transplanting. At the 3-4 leaf stage after onion planting, 24% fruit 66-72 ml per mu or 43% Hanchaoling 80-100 ml per mu can be used to spray 50-60 kg of water respectively. After onion transplanting, 33% herbicide EC can be used per mu 100-150 ml. Or use 100 grams of 50% riguron wettable powder per mu and spray 50-60 kg of water. In order to improve the effect of applying herbicides to onions and onions, attention should be paid to the application of herbicides before emergence after sowing. After transplanting, the weeds should be applied before the emergence of seedlings. Onion forbids the fruit in the 2-leaf stage, and use the fruit carefully before 3 leaves. It is applied around noon in sunny days when the temperature is low, and in the morning or afternoon when the temperature is high. Prometryne should not be used in sandy soil. Click to get more onion planting technology click to get mass herbicide use technology click to get mass pesticide application technology