On April 21, the reporter came to the School of Plant Protection, Northwest A&F University. Professor Wang Baotong from the State Key Laboratory of Crop Stress Biology in Arid Regions explained the hazards and prevention of wheat stripe rust and head blight to the reporter. "'One spray and three prevention' can be adapted to local conditions, classified guidance, and mixed fertilizers. It can prevent and control crop diseases and insect pests such as wheat stripe rust, scab and aphids at the wheat ear stage, and at the same time take into account wheat powdery mildew, leaf blight, midge and midge Wheat spiders." Professor Wang Baotong emphasized that we must seize the critical opportunity from April 25 to 30 and grasp the work of "one spray and three prevention" for wheat. The prevention and control work must be completed before the "May Day". "One spray and three preventions" means mixing insecticides, fungicides and foliar fertilizers for application. One spraying can prevent diseases, insects, dry and hot wind, and finally achieve an important measure to increase the thousand-grain weight of wheat. , Is a key technology to promote stable and increased production of wheat. " Professor Wang Baotong believes that wheat field management should be based on the implementation of the plant protection policy of "prevention first, comprehensive prevention and control", the implementation of professional unified prevention and control, and the guidance of group prevention and group management. The first is to use sufficient amount of liquid medicine according to the instructions for use of the medicine. If it rains within 3-6 hours after applying the medicine, it should be treated in time after the rain. In case of continuous rainy weather suitable for the epidemic, it is necessary to use the medicine for 1-2 times every 5-7 days to ensure the control effect. In areas with high levels of resistance to carbendazim, the use of benzimidazoles should be stopped, and alternative medications and mixed medications should be encouraged. Second, for wheat midge, we should focus on the prevention and control of adult insects at the heading stage. In the early morning or evening of the booting stage, when you see 1-2 adults flying in the wheat ridge, you should use phoxim, chlorpyrifos, lambda-cyhalothrin, chlorofluro-imidacloprid, dinotefuran and other pesticides for control in time , The retransmission area should be administered twice continuously every 3 days to ensure the effect. The third is to continue to strengthen the detection and treatment of wheat stripe rust, delay the spread and reduce the degree of field damage. For wheat powdery mildew, it can be combined with the prevention and control of stripe rust and head blight. When the rate of diseased leaves in the field reaches 10%, use triadimefon, diniconazole, myclobutanil, propiconazole, epoxiconazole, tebuconazole, prochloraz, kresoxim-methyl, and oxystrobin for control If the field is serious, it should be sprayed again every 7-10 days. The fourth is to use pesticides scientifically, pay attention to the following: 1. The dosage is accurate. Operate in accordance with the instructions for the use of specific pesticide varieties, and do not increase or decrease the dosage at will. 2. Scientific mixing. When preparing wettable powder pesticides, first dissolve it with a small amount of water and then pour it into the spraying equipment and stir it evenly, so as to avoid the unevenness of the drug solution and cause harm. 3. Choose the time. During the flowering period of wheat, the pollination time should be avoided. At the same time, the application should be avoided under high temperature and sun exposure. Reapplying should be done in case of rain within 6 hours after application. 4. Highly toxic pesticides are prohibited. The use of highly toxic, high-residue pesticides and their compound preparations is strictly prohibited. Priority should be given to environmentally-friendly and applicable pesticides and scientific formulas for prevention and control. 5. Follow the operating procedures. Strictly abide by the safe operation procedures for pesticide use to ensure the safety of operators and prevent poisoning. 6. Use qualified pesticides. When buying pesticides, you must purchase products with complete three certificates and registrations, and refuse to use unqualified products, so as not to affect the control effect. The types of commonly used pesticides are as follows: Insecticides: imidacloprid, acetamiprid, pymetrozine, thiamethoxam, deltamethrin, lambda-cyhalothrin, lambda cypermethrin, fenvalerate, aphiprocarb, avermectin, matrine Wait. Among them, imidacloprid and acetamiprid should not be used alone, but should be mixed and sprayed reasonably with low-toxic organophosphorus pesticides. Fungicides: triadimefon, diniconazole, tebuconazole, hexaconazole, propiconazole, difenoconazole, prochloraz, epoxiconazole, thiophanate-methyl, cyanostrobin, wax Bacillus, jinggangmycin, prothioconazole, fluconazole amide, propazole·tebuconazole, prothiophene·tebuconazole, cyanene·tebuconazole, etc. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Pet Massager,Cat Massage,Dog Massage,Pet Groomer Tools Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizonscares.com
Frequent weather "changes face" wheat "one spray and three defenses" to do this
The recent suitable temperature and continuous rain are very suitable for wheat stripe rust and head blight infestation, harm and epidemic. In the face of the severe situation of rapid spread of disease infestation, how to do a good job in the prevention and control of wheat diseases and insect pests?