1. DuPont Baocheng 25% dry suspension concentrate, a special herbicide for potato. 5 ~ 7.5g of DuPont Baocheng 25% dry suspension concentrate is mixed with 30 ~ 40kg of water per mu. After potato seedling, the weeds are sprayed in the field at the 2 ~ 4 leaf stage, which can effectively control annual gramineous weeds and broad-leaved weeds, and has no residue on potatoes. When dispensing medicine, the required amount of DuPont Baocheng is first prepared into mother liquor, which is added into the spray bucket, and then neutral washing powder or detergent is added according to the proportion of 0.2% to make up enough water and fully stirred.

2. go. The drug is a selective contact herbicide for soil treatment and post-seedling stem and leaf treatment. Spraying 40 ~ 50ml of 24% GOER EC on 60kg of water can prevent and control many annual weeds, such as barnyard grass, Euphorbia Millettia, Herba Ajugae, Setaria viridis, Poa pratensis, Portulaca oleracea, Amaranthus tricuspidata, Spartina japonica, etc., but the effect on perennial weeds is poor. Attention should be paid when using: ① When using for the first time, small-scale tests should be carried out according to different climatic zones to find out the best application method and optimal dosage suitable for local use, and then use it in a large area. ② Goer is a contact herbicide, and the spraying should be even and thoughtful. After spraying, the film layer should not be damaged, and the dosage should be accurate.

3. sekejin. The drug is a selective systemic conductive soil treatment agent. 25-65g of 70% saikejin wettable powder per mu is sprayed on the surface with 40-50kg of water evenly, which can prevent and kill a variety of broad-leaved weeds and some gramineous weeds, such as Chenopodium album, Sparse, Portulaca oleracea, Ixeris sonchifolia, Herba Xanthii, barnyard grass and Setaria viridis. When using, it should be noted that it is easy to produce phytotoxicity when it is flooded with heavy rainfall or water after application.