The weeds in garlic field have the characteristics of early occurrence, variety, and long period. In general, garlic growing season is the maturing season of all kinds of weed seeds. Early weed species occur early, and the increase in ground temperature after mulching is more conducive to the growth of weeds. Therefore, weeds should be treated early in the field. When we grow garlic, we have different mouthwashes and weed species are very different. Weeding with a herbicide is often not effective. There are two peaks in weeds in garlic fields. One is from sowing to seedling (before winter), and the other is from spring to bolting. It is difficult to completely control the use of a single herb. The damage of weeds is mainly manifested in two aspects: one is to reduce the production of garlic, and the other is to reduce the quality and reduce the benefits. Weeds and garlic compete for light, water, and nutrients, causing garlic to appear small and scattered due to lack of nutrients. It cannot be exported and the benefits are reduced. Therefore, it is very important to do a good job of preventing and controlling weeds in garlic fields as soon as possible. In addition to the bad effects of the weeds in the garlic field and even the emergence of phytotoxicity, most of them are caused by the farmers themselves. According to surveys, farmers currently have a problem of insufficient investment in weed control in the garlic field, but with herbicides, only 6-8 yuan per mu can be used. In addition, some farmers are blind to the selection of herbicides, and have not used herbicides that are effective in weed control in garlic fields, such as vegetable grass nets and quizalofop. According to the types of weeds in the garlic field and their occurrence, medication should be given as soon as possible. That is, before sowing, shoots with a net of 150-200 ml of 33% vegetable grass per acre, and watered with 40-50 kilograms of water, and sprayed on the ground surface after mixing, and then shallow mixed soil. For the more serious weed occurrence in past years, 33% vegetable grass net 150-200 ml, 50% acetochlor 100 ml, and 40-50 kg water were used per acre, and the mixture was evenly sprayed on the soil surface. Covering the film of garlic can be applied after the first cover film. Sites not treated with soil can be treated with stems and leaves. The grasses dominated by grass weeds (pointed leaves grass) can be used after the emergence of garlic and the weeds grow to 3 leaves before each stage with 5% quizaloprene EC 50-70 ml, watered 30 kg spray . The soil moisture is better when applied, and the temperature should be above 10°C to improve the weeding effect. Weeds can be controlled by a broad-leaved weed and Cyperaceae weeds. Rongcheng Jingyi Oceanic Technology Company Limited , https://www.jingyifoods.cn