Pest control is particularly critical in the mid and late stages of wheat growth
Entering in May, winter wheat heading from south to north gradually determines the weight of wheat grains. Diseases such as powdery mildew, rust, scab, midge, aphids, and wheat spiders also follow. In this period, timely and reasonable prevention of pests and diseases, prevention of premature decay, and ensuring of wheat production are important. It is the most scientific choice for different diseases and insect pests, with the combination of prevention and treatment, rational collocation of agents, skillful use of drugs, and comprehensive prevention and control. Early suppression of heading and culturing of head scabs after heading: In recent years, the damage of wheat scab in the northern winter wheat region has been increasing year by year, especially in winter wheat in the entire Jianghuai region and North China. The production caused a significant loss. In 2013, the situation of wheat head blight was still severe. It must be highly regarded and strictly controlled. The peak period of infection by wheat scab was in the early stage of wheat flowering under the condition of rain or dewdrops. Therefore, it is very important to look at the drug application. Careful spraying should not be ignored. In early May, when wheat enters the flowering stage, if it encounters continuous rainfall and high humidity, it will be sprayed and prevented as soon as possible. You can use 40% Duofu Bromocronitrile WP 800 times, 10% Fluorosilazol 1000x or 25% Myclobutanil 2000x, etc., with no less than 30 kg of liquid per acre and blended with silicone Auxiliaries, evenly sprayed on the ears. To use a sufficient amount of the drug, it should be rained within 3-6 hours after application, and it should be promptly treated after the rain. In regions where Fusarium has high resistance to carbendazim, use of benzoimidazole such as carbendazim should be stopped to ensure the control effect; if the disease is endemic, the first prevention and control will end at an interval of 5-7 days. Prevention and control for the second time ensure the control of prevailing hazards. The medicinal liquid can be mixed with active insects such as beta-cypermethrin or lambda-cyhalothrin. On April 20th, a large area of ​​snowfall in the northern winter wheat area will reduce the temperature, and it will have a greater impact on the spikelet fertility rate of wheat that is in booting. Therefore, it is best to add cytokinin or potassium dihydrogen phosphate to promote small spraying. Strong spikes. In the early stage of florescence after flowering, it was important to prevent panicle blast and powdery mildew and rust. Wheat stubble was always the main pest that was concentrated in the panicle during the grain-filling period. If not properly controlled, the grain weight of wheat would be greatly affected. But how to do a one-time spraying can achieve control effect, but also stress. From turning green to grain filling stage, wheat aphids gradually grow and spread in the field. The sweltering weather during the early stage of filling is conducive to the propagation and expansion of the panicle blast, and special attention should be paid to its occurrence dynamics. When the average number of aphids per panicle is more than 5, it should be sprayed and prevented immediately. 10% imidacloprid wettable powder 20g/mu, 2.5% lambda-cyhalothrin microemulsion 40ml/mu can be used. In view of the fact that these agents do not fumigate, they must be uniformly sprayed with not less than 30kg per mu when spraying. Liquid medicine. In wheat fields where powdery mildew and rust occur more severely, it is advisable to mix 25% of myclobutanil EC or propiconazole as a combination of the fungicides in the drug solution. In addition, it is best to mix high-quality potassium dihydrogen phosphate and prevent the hot wind from increasing. Grain weight. Wheat heading to grain-filling stage is a critical period for the intertwining damage of various diseases and insect pests such as scab, stripe rust, wheat aphid, and midge, and the use of fungicides, insecticides, and plant growth regulators or foliar fertilizers on roads is a reasonable mix. , Timely medication, even spraying, disease prevention and control of pests against dry hot wind, to achieve the "one spray and three defenses", the provincial holiday and the purpose of increasing production and production. Special reminder: In the area where the midge resurgence occurs, the period of validity of the pesticide should be fully utilized, and the time of prevention and control should be appropriately advanced and used in the early stage of adult emergence. Our mission: To protect the health of ear, throat and nose with medical frontier knowledge and technological innovation. Nasal Irrigator, Electric Nasal Irrigator, Manual Nasal Irrigator Ningbo Jiamai Internet Technology CO., Ltd. , https://www.jmcuhyd.com
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