How to use herbicides scientifically?

How to use herbicides scientifically? Please guide the correct use of herbicides should pay attention to a few points: first, chemical removal technology 1, after sowing, pre-seedling soil closure treatment after corn sowing, before the seedlings are unearthed, 50% Acetochlor EC 150-200 ml per mu, or 72% isopropachlor EC 100-150 ml, 40-60 kg of water evenly sprayed on the soil surface. When spraying, the driver has to march backwards. 2. Early post-sowing stem and leaf treatment at 3-5 leaf stage of maize emergence and 2-4 leaf stage of weeds, 30% oxazolone suspension 10 ml + auxiliaries per mu, 52% nicotinyl atrazine wettable powder 120 g, 10% nitrosulfonone suspension 150-200 ml, 30-40 kg water for stem and leaf spray. 3. Corn inter-row weeding after the 6-leaf period of corn, you can choose 20% 100 grass dry water agent 150-200 ml per mu, 40-60 kg of water, plus a protective cover for corn inter-row spray. Matters needing attention 1. Acid amine herbicides, such as Acetochlor, alachlor, butachlor, Metolachlor, Metolachlor, etc., were used for soil closure treatment. 1-year-old grass buds and some 1-year-old broad-leaf weed buds withered and wilted after absorption, but had a slight irritating effect on eyes and skin, and the weeding effect decreased significantly when soil moisture was poor. 2. Atrazine, also known as atrazine, has a long effective period in the soil, generally using stem and leaf spray, mixed with 40% atrazine of Acetochlor, and the dosage is more than 250 grams per mu, which is easy to cause drug damage to the following wheat. 3. Corn drug damage is easy to be caused by such factors as the use of medicine after 5-leaf stage, misuse of herbicides, unclean equipment, increased dosage, use of organophosphorus pesticides within 7 days, poor quality of pesticides, temperature exceeding 30 ℃ and so on. 4. use special equipment for corn herbicides to properly preserve the remaining herbicides to prevent drug damage on wheat. Third, remedial measures for drug damage 1. Spray clear water or irrigate enough water to reduce or remove the residue of herbicides on corn, promote corn to absorb a large amount of water, reduce the concentration of herbicides in the body, and alleviate drug damage. 2. Spraying 500 times liquid Yemanbao or Jieshuling after the dew dries in the morning or in the evening, or applying 0.2% copyright 0.3% potassium dihydrogen phosphate, while adding zinc, iron, molybdenum and other micro-fertilizers can reduce drug damage. In case of herbicides decomposed by alkaline substances, 0.2% quicklime or 0.2% sodium bicarbonate diluent can be selected for spraying. 3. Increase the times and depth of intertillage, accelerate the decomposition of soil nutrients, enhance the ability of roots to absorb water and nutrients, and restore the normal growth and development of maize. Click to get mass herbicide use technology click to get mass pesticide application technology