What are the diseases and insect pests of wheat at seedling stage

What are the diseases and insect pests in wheat seedling stage? Please introduce wheat rust 15-20 days after the emergence of wheat, select the wheat field with disease conditions for investigation, when the diseased leaf rate reaches 10%, and the autumn temperature is too high, Rain Water is too much, immediately spray triadimefon or triadimefon for prevention and control, that is, spray 50 kg of water with 12.5% WP 15-20 g or 15% Triadimefon WP 75 g per mu, one piece is found and one piece is found. Wheat sheath blight can occur from seedling stage to heading stage. The symptoms of the seedling stage are mainly manifested in the underground part, which harms the underground stem of wheat after emergence, showing brown spots, or oval spots, and developing upward. 75 grams of 20% vermicellin wettable powder or 40 grams of 20% Jinggangmycin per mu is sprayed on 50 kg of water along the ridge, the effect is very good. The pathogen of wheat total erosion disease could be infected in wheat seedling stage, and the peak of infection disease was 20-30 days after emergence. For the plots where total erosive disease of wheat has occurred in the past, spraying seedlings with 12.5% Heguoli wettable powder 15g / mu or 20% EC 120g / mu to 40kg / mu and spraying seedlings along wheat ridges can significantly reduce the incidence of wheat at spike stage. Wheat aphids can not only directly damage the yield of wheat, but also spread wheat yellow dwarf disease. When the rate of aphids is more than 5% and the number of aphids per hundred plants is about 10, chemical control should be carried out. Per mu with 25 ml of aphid lice net or 20 grams of imidacloprid or 20 grams of imidacloprid to water 40-50 kg, Shunmai ridge spray, the effect can reach 98%, and can also control wheat red spiders. There are mainly three kinds of underground pests: mole cricket, grub and golden needle worm. Representative plots were selected for investigation 30 days after wheat emergence, and pesticide control was carried out immediately when the seedling death rate reached 3%. Wear trichlorfon poison cake: use 90% crystal trichlorfon 75 grams per mu, first melt it with warm water, then add water to 1.5 kg and spray it on 10 kg of crushed sesame cake or rapeseed cake. Put the poison bait on the wheat field with bait. The effect of killing insects and protecting seedlings by this method can reach 95%. Spread poisonous soil: use 2% methyl isophosphates powder 2 kg to mix fine soil 30 kg / mu, mix it well and apply it into wheat ridges, which can effectively control the harm of grubs, golden needles and wheat midges. Sprinkler irrigation potion: for plots with spot damage, 40% methyl isophos or 50% phoxim 0.5 kg plus 60 kg 75 kg of water can be used per mu, and wheat roots can be sprayed along wheat ridges, which has a special effect on grubs and golden needles. Locusts and crickets have occurred in large quantities in recent years, often harming early-sowing wheat seedlings. 75 grams of 90% crystal trichlorfon per mu can be used, first with hot hydration and then add water to 1.5 kilograms, spray and mix 5 kilograms of fried wheat bran into poison bait, and spread traps along wheat ridges with good results. Click to get more wheat planting technology click to get more grain planting technology