How to Chemical Weed Control in Winter Wheat Field

How to weed wheat fields chemically in winter? Please guide chemical weeding in winter wheat field can refer to the following methods: 1, control drugs: 3% Shima oil suspension (methyl disulfuron); 3.6% Kushima water dispersible granules (methyl disulfuron + methyl iodosulfuron sodium salt). 2. Usage: Shima 25-30ml/ mu + safety agent (companion treasure) 75-95ml/ mu (2ml 3 sets) / mu to water 30kg; Kuoshima 20-25ml/ mu + safety agent (companion treasure) (80-100ml) / mu, that is, per mu (2.5m / mu), 30 kg water can also control broadleaf weeds. 3. Master the appropriate application time: use herbicides before winter as far as possible, which has good weeding effect and high safety. The specific requirements are as follows: (1) depending on the seedling situation: winter wheat seedlings after 3 Mel 6-leaf stage, Gramineae weeds 2 Mel 5-leaf stage (2 before tillering), basically produce full seedlings. (2) look at the weather: it is best to use it in sunny days without frost and heavy rain within 4 days. The best temperature for use is 10 ℃, and it is best to use it with good light and high temperature at noon. It can be basically absorbed within 4 hours. The lowest temperature during medication is generally no less than 4 ℃. When crop growth is seriously poor, or when the following conditions occur: overcast and rainy days, low-lying water, wet mud, saline land or suffering from waterlogging, freezing, salt, diseases, insect pests and malnutrition, or when there is heavy rain or frost within 4 days after application (the lowest temperature is below 3 ℃), it is forbidden to use the pesticide, and do not flood the wheat field within 2 days before and after application to avoid drug damage. 4. Usage: mix the bundled preparation and Bao (safety agent) into the mother liquor, and then pour it into a sprayer in the water and stir it evenly. Each packet of medicine is sprayed with sprayer water (16 liters). Be sure to pay attention to the spray at a constant speed, uniform spray, "grass spray in many places" is strictly prohibited, re-spraying, leaking spray or out-of-range use is strictly prohibited. The best water consumption of spraying in wheat field is as follows: the water consumption of motorized sprayer is 15ml / mu, and that of manual sprayer is 30 / mu. Precautions: (1) herbicides should be used alone and should not be mixed with other herbicides, pesticides and foliar fertilizers at will. It is forbidden to mix with 2Jing 4-drop and long residual herbicide. If there are many kinds of broad-leaf weeds in wheat field, you can spray other herbicides 2 weeks after spraying Shima or Kuoshima 1mer. (2) it is forbidden to use it during the period of low temperature and frost in winter and after jointing of wheat, so as to ensure the efficacy and avoid the residual effect on the following crops. Weeds on the edge of the field and on the ground should be controlled at the same time. (3) the pesticide has a certain squatting effect, and temporary yellowing or dwarfing may occur in the early growth stage of some crop varieties. Under the condition of normal use, the yellowing of wheat disappears naturally after turning green, which can prevent wheat from overgrowing and lodging, weeding and increasing yield significantly. (4) do a good job of personal protection when spraying. If you apply medicine, you should wear protective glasses, masks and gloves, wear protective clothing, prohibit eating and smoking, thoroughly wash the exposed skin with soap and water after use and before smoking, and consult a doctor if the skin has a persistent irritating sensation. if the liquid is splashed into the eye, please rinse with enough water for more than 15 minutes and ask the doctor for treatment. (5) adaptation to wheat varieties. Through many years' and multi-point experiments on different wheat varieties, it is proved that Shima and Kuo Shima are very safe for most of the winter wheat varieties planted in our province (except those that have not been approved). However, it has a certain impact on some wheat varieties with strong spring and strong gluten (horny or hard). Before use, please consult the relevant departments about which kind of wheat varieties belong to, first do a small area test, and then use it in a large area according to the situation. Click to get more wheat planting techniques click to get more herbicide application techniques click to get more pesticide application techniques