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Acetochlor Acetochlor is a selective pre sprout herbicide, which is suitable for the prevention and control of annual gramineous weeds, some dicotyledonous weeds and soybean dodder before sprouting of dry land crops such as soybeans, peanuts, corn, rape, Gansu, cotton, potatoes, Chinese cabbage, radish, cabbage, cauliflower, tomatoes, peppers, green beans, lettuce, carrots, lettuce, chrysanthemum, leguminous vegetables, citrus, red grapes, orchards, etc. Traditional Chinese medicine formulations include 90% Heneisi emulsifiable concentrate, 50% acetochlor emulsifiable concentrate, 88% acetochlor emulsifiable concentrate, and 20% acetochlor wettable powder. Operation method: The general dosage per mu is 50-70 grams, with 40-60 kilograms of water added. After sufficient stirring, the weeds should be evenly spread on the soil surface after planting the crops and before being unearthed. The plastic film should be sprayed before pressing the mold. Operation method of propachlor: Apply it in water direct seeding and seedling fields, first clean the ground, and then promote tooth planting. Two to four days after planting, irrigate the shallow water layer, use 100 to 115mL of 30% emulsifiable concentrate per mu, evenly spray 30KG of water or 20KG of mixed fine fluvo aquic soil or topdressing the whole field, and maintain the water layer for three to four days. It has good control effects on barnyard grass, water amaranth, carp intestines, duck tongue grass, cowhair grass, goldenrod, knotweed, heterotypic sedge, firefly rush, etc. 2 methyl 4 sodium chloride is suitable for preventing and controlling broad-leaved plant weeds such as heterotypic sedge, duck tongue grass, water amaranth, wild arrowhead mushroom, flat-rooted deer grass, polygonum, large nest vegetable, pig weed, Ranunculus, chrysanthemum, dandelion flower, Cayratia japonica, prickly ash, and other weeds in the sedge family in fields of gramineae crops such as rice, wheat, and corn. Pyrazosulfuron methyl (also known as benazosulfuron methyl) is a selective endopeptic conducting herbicide that is mainly absorbed by the root and stem, rapidly migrates within the main stem of the weed, inhibits growth and development, and gradually kills the weed. Rice can dissolve the drug and is basically harmless to rice growth and development. The drug has stable efficacy, high safety factor, and a shelf life of 25-35 days. Suitable crops: rice seedling fields, direct seeding fields, and transplant fields. Characteristics of bensulfuron methyl: It is a selective internally absorbed and conductive herbicide for rice fields. It can effectively prevent 1-year-old and multi-year broad-leaved plant weeds and sedges, and can be digested and absorbed by miscellaneous grass roots and leaves, and transmitted to other parts. Safe for rice and easy to operate. Scope of application: Suitable for controlling 1-year-old and multi-year broad-leaved plant weeds and sedges in rice fields. Enemy Barnyard Grass Enemy Barnyard Grass is mainly used for the prevention and control of barnyard grass and duck tongue grass, wild arrowhead, cowhair grass, water Polygonum, water celery, and water purslane in paddy fields; Used in early rice fields to prevent and control weeds such as dry barnyard grass, barnyard grass, dog tail paddles, millet, field convolvulus, wild amaranth, and red polygonum. There is basically no effect on the four leaf duckweed, wild water chestnuts, and watercress in paddy fields. Diquat is a tactile herbicide that is almost not transported within the plant body and only has a tactile effect on the areas touched by the drug. When drugs enter the body of barnyard grass, they disrupt its water balance, accelerate water loss, cause separation of the cytoplasmic wall of the body, and the leaves gradually wither and die. The tolerance of rice to barnyard grass is about 100 times that of barnyard grass, because the fluorophenylribonucleotides in the main stem of rice can quickly convert barnyard grass into non-toxic substances. During the seed germination stage, rice has a 20 times higher dissolving ability than barnyard grass, and a 25 times higher dissolving ability during the seedling stage. 16% and 20% emulsifiable concentrates are used for the production of barnyard grass. With stems and leaves