After the spring, the pests and diseases of wheat in our province began to recover, multiply and harm. The main pests were wheat stripe rust, sheath blight, powdery mildew, wheat midge, wheat aphid, red spider, and underground pests. The main weeds in spring include broad-leaved weeds such as swine feverflies, sowed nymphalis, leeks, and alfalfa, and vicious grassy weeds such as glutinous rice, bromegrass, wild oats, and maidens. All localities must, in light of local conditions, grasp the prevention and control indicators, implement the technical points for proper prevention and control, and control the hazards in a timely manner. The following prevention and control technologies are proposed: I. Wheat sheath blight: The end of the tillering stage of wheat is the appropriate period for the control of sheath blight. When the disease rate in the field reaches 15%, 12.5% ​​of diniconazole wettable powder can be used for 20-30 grams, or 20% of triadimefon. Wettable powders 80 to 100 grams, or 40% Dupont (starchrimidine) 4 ml + 50% carbendazim 80 to 100 grams. The above agents can be mixed and sprayed with each other in half to improve the efficacy. In our province, the general prevention and control can be done once. In the case of low-temperature and humid weather, we usually plant plots with too early sowing, too much seeding, too large field groups, and the occurrence of wheat fields with high nitrogen fertilizer, high field humidity and “freezing damageâ€. Often more serious. If sheath blight still has a developing trend, it should be sprayed once every 7-10 days. Second, wheat stripe rust from late April to early May is the key period for the prevention and control of wheat stripe rust. We must strengthen and improve the emergency plan for monitoring and prevention of stripe rust, and continue to promote the strategy of “accurate monitoring, drug discovery, discovery, prevention and control.†It requires early detection, early prevention, and prevention of contagion. If leaf rust occurs at the jointing or booting stage of wheat, when the average diseased leaf rate in the field reaches 0.5% to 1%, it should be immediately prevented and prevented from taking place. The use of 12.5% ​​diniconazole, or 20% triadimefon 1500 times, or rust special (25% propiconazole) EC 2000 times for spraying, emphasizing spray thoroughly. Simultaneously treats powdery mildew. III. Wheat midge The wheat booting stage in mid-late April in our province is the period of midge suction, which is the best time to control midge. Can use 5% chlorpyrifos powder 600 ~ 900 grams, formulated into 25 ~ 30 kg of poison (sand) soil, Shun Mai ridge evenly spread the surface, sprinkle poisoning soil after watering can improve efficacy. Be careful not to spray medicine with dew, and use broomsticks, branches and other apparatus to shoot the poisonous soil that has stuck on the wheat leaves on the ground in order to fully exert its efficacy. Four, wheat field weeds before the winter did not chemically weed or spring weeds to rake-based wheat, wheat rose to the jointing period, first grasp the prevention and control indicators, weeds unearthed 2 to 4 leaf stage medication. We then scientifically select the pesticides of different types for different types of weeds. Generally, we can use 40% clomazone (famoxanone) as a dry suspension agent, 4 g, 10% of tribenuron-methyl, 10 g, or Mishida (459 g/liter). Fluoxetine + dimethyl tetrachloroisocyanate suspension) 30-40 ml, or 36% Pentium (22% flufenoxaone + 14% methamulfuron) Wettable powder 5g; The main wheat fields such as male and female cattle, etc., can use 20% chlorofluoroacetic acid 60-70 ml per mu, or Mai Xi (5.8% flufenoxan plus flufenoxan suspension) 10 ml. Or make it very wide (6.25% amisulfuron + methyl iodosulfuron sodium salt dispersible granules) 15 to 20 grams; to sow wormwood, leek, wheat straw grass-based wheat, can use 10% benzene per acre Sulfuron 10 g +56% dimethyl tetrachloro-sodium salt 100 g (or 72% 2,4-D butyl ester 25-30 ml) are used in a rational mixture with each other. Use of 2,4-D butyl esters for medical equipment to emphasize the use of special weapons, can no longer be used to spray broad-leaved crops. At the same time as chemical weeding, the corresponding fungicides can be added and sprayed to treat the occurrence of diseases in wheat fields. It can also treat sheath blight and early powdery mildew. Once the fields have been found, we must manually remove the malaria grass, weeds, wild oats, bromegrass, and apricot weeds. We must remove them thoroughly before the heading of the wheat and take it out of the field to eliminate it before wetting. . 5. Multi-injection and multi-prevention techniques From late April to early May, from wheat heading to flowering stage, midge eclosion and oviposition were started. The upper part of the wheat had midge worms spawning, and the middle and lower leaves had wheat aphids breeding and gradually transferred to the panicle. harm. To prevent and control midge pests and wheat bran in a timely manner, they can be sprayed with 4.5% beta-cypermethrin, 50% phoxim, 10% imidacloprid, 50% omethoate 1000-fold, or 50% chlorpyrifos 1500-fold. The above insecticides can also be mixed and sprayed with each other in half to improve the insecticidal effect. At the same time, add 12.5% ​​of diniconazole or 25% tebuconazole according to 1500 to 2000 times the dilution factor, or use 1000 times the dilution of 20% triadimefon or 50% carbendazim to control the leaf blight, Gibbs disease, stripe rust, etc., to achieve a spray and more defense, increase production and production of the results. N95 Cup Mask Production Equipment and Supporting Equipment Kn95 Cup Facemask Machine,Kn95 Cup Mask Machine,Kn95 Cup Respirator Machine,Kn95 Fold Flat 3D Mask Machine Ningbo Dokee Mask Machine Co., Ltd. , https://www.autrendsmac.com