Opinions on wheat sowing and prevention and control of diseases, insect pests and weeds at seedling stage

Winter wheat is one of the food crops with the largest sown area in our region. to do a good job in the prevention and control of diseases, insect pests and weeds before sowing is the key to ensure a strong seedling, a good harvest of summer grain and ensure the safety of grain production in our region. In recent years, with abnormal climate change and an increase in extreme weather, the occurrence frequency of wheat diseases and insect pests has also increased, among which some diseases, pests and weeds occur at the wheat sowing and seedling stage, and the sowing and seedling stage is the best period for the prevention and control of these diseases and insect pests. I hope that the competent departments of villages and towns and the vast number of association members will actively publicize farmers and conscientiously do a good job in prevention and control work to ensure the safety of wheat production at the seedling stage. The main pests that need to be controlled during sowing and seedling stage: Golden needle worm, grub, mole cricket; diseases include sheath blight, glume blight, leaf blight, root rot, total erosion, fishy smut, loose smut; weeds are brome, alkali grass, see wheat and other weeds. 1. The mixed plots of wheat glume blight, leaf blight, fishy smut, smut and underground pests can be soaked with 50% carbendazim mixed powder (carbendazim: 1:1) for 48 hours or 50% carbendazim wettable powder, 70% methyl thiophanate wettable powder, 40% mixed seed double + 50% phoxim EC 100ml 100kg, dry and sow seeds. 2. Wheat total erosive disease and underground pests mixed with mild disease fields with total erosion net 20ml and 0.5kg 0.75kg of water and 10kg of mixed wheat seeds. The seriously diseased field was mixed with 20ml mixed wheat seed 6.5ml 7.5 kg + 48% Lesbon EC according to 0.3% of the seed weight, piled up for 6 hours for 12 hours, dried and sowed, so that the agent fully adhered to the seed surface and killed the germs on the seed surface. 3. In the fields with mixed occurrence of wheat sheath blight, root rot and underground pests, 50% methyl thiophanate or 50% carbendazim 200% phoxim 100ml can be used to sow seeds in the sun. 4. Prevention and control measures of Gramineae, such as brome, alkali grass, sorghum, etc. Late October to early November is the best time to control Gramineae weeds. 4.1 Control of brome: 30 ml of 3% Shima or Kuoshima 20 ml per mu, 30 kg spray with water. 4.2 Control of alkali fescue: 50% grass per mu. Ethyl EC 80-100ml mixed with 50% water was sprayed in the whole field after the emergence of wheat seedlings. 4.3 Control of Triticum aestivum: after wheat emergence, the weeds were sprayed with 50% isoproturon, 125-250g / mu and 50 mu of water before tillering. Note: ① should not be used when the minimum temperature is lower than 4 ℃; rainfall does not affect the efficacy of ② 4 hours after application, but it should not be flooded 2 days before and after medication.