Wheat pests and diseases will be more serious, stripe rust, scab should pay attention to According to the prediction of relevant experts organized by the National Agricultural Technology Center, the overall weight of wheat pests and diseases occurred in 2017, with an area of ​​960 million mu. Among them, the disease is 490 million mu and the insect pest is 470 million mu. Scab has a high prevalence risk in the middle and lower reaches of the Yangtze River and the wheat area in the south of Huanghuai. The aphids in the northern part of the North China and Huanghuai area can reach a large extent. The stripe rust is in the south of Henan, the Hanjiang River in the northwest, the northwest and the southwest. In the local wheat area, powdery mildew and sheath blight occur in high-yielding wheat areas. Since the beginning of the new year, the National Wheat Industry System and the National Agricultural Technology Center have conducted in-depth investigations on the occurrence of wheat stripe rust in some provinces. At present, stripe rust occurs in 150 counties (cities) in the southwest, the upper and middle reaches of the Yangtze River and the eight provinces and regions of the Hanjiang River Basin, and powdery mildew is also occurring in the southwest and other places. Especially in Hubei and southern Henan, this year's strip rust occurred early, with a wide range and a heavy degree, which has attracted the attention of the Ministry of Agriculture and the local government. These provinces and autonomous regions have carried out prevention and control through various channels. In view of the prediction and actual occurrence of wheat pests and diseases this year, the main pests and diseases to be concerned in the following areas are: Strip rust is generally moderate, with an area of ​​about 30 million mu. Among them, Gansu Weinan and Jizhong high-altitude late-maturing wheat area, Sichuan river basin, southern Henan, northwestern Hanjiang River, Xinjiang Yili River Valley and Tacheng Basin are in a prevailing trend, most of Hubei, other wheat areas in southwest, southern Gansu It is moderately prevalent in the central, southern Shaanxi and Guanzhong western regions, southern Ningxia, eastern Qinghai, and other wheat regions in Xinjiang. The rest of Shaanxi, central and northern Henan, southern and eastern Shandong, and southern Shanxi and Shanxi are relatively light. Powdery mildew is generally biased, with an area of ​​120 million mu. Among them, high-yielding wheat areas such as Huanghuai, Jianghuai, and the middle and lower reaches of the Yangtze River are highly concentrated, with high planting density and heavy occurrence of stagnation, and occur in North China, Southwest China and Northwest China. The overall incidence of sheath blight occurs, with an area of ​​130 million mu. Among them, the eastern part of Hubei and Jianghan Plain, Anhui and Jiangsu, Huaibei and Yanhuai, along the Yangtze River, and Henan, the east and west of the mountain, the other areas of Jianghuai, Huanghuai and North China occurred. The prevalence risk of scab is higher than the above, and the area is 100 million mu. Among them, Anhui and Jiangsu along the Huaihe River and its south, Hubei Jianghan Plain, northern Zhejiang, Shanghai coastal wheat area have a risk of pandemics, other wheat areas in the middle and lower reaches of the Yangtze River, southern wheat area of ​​Huanghuai has a tendency to be prevalent, north of Huanghuai In the southern, southwestern and northwestern parts of North China, some wheat areas are moderately popular. Leaf rust, leaf blight, root rot, total eclipse, smut, cyst nematode, viral disease, snow rot fungus can cause certain harm in some wheat areas. The overall weight of the locusts occurred, with an area of ​​250 million mu. Among them, Shandong and Hebei occurred, and other wheat areas in Huanghuai and North China, Sichuan and Ningxia occurred heavily, and most of the middle and lower reaches of the Yangtze River and other wheat areas in the southwest and northwest occurred. The wheat spiders are generally moderately occurring, with an area of ​​90 million mu. Among them, the western part of Henan Province and the southwestern part of the mountain are heavily polluted. The North China, Huanghuai and Northwestern wheat areas occur moderately, and the Jianghuai and Southwestern wheat areas are relatively light. The larvae are generally lightly occurring, with an area of ​​23 million mu. Among them, the northern part of Henan Province occurred locally, and the middle and southern parts of Hebei, Tianjin, and the middle and eastern areas of Guanzhong in Shaanxi Province occurred moderately. However, there were some re-emergence fields, and North China, Huanghuai and other wheat areas in the northwest occurred lightly. The underground pests such as golden worms, cockroaches and cockroaches are generally moderately occurring, with an area of ​​60 million mu. Among them, Henan, Shanxi, Hebei, and most of the northwestern wheat areas occur moderately, and other wheat areas in North China and Huanghuai occur lightly. A generation of armyworm, gray planthopper, wheat leaf bee, wheat stem bee, white eyed grasshopper, and earthworm can cause certain harm in some wheat areas. Seize the opportunity to use the medicine, the cost is small and the effect is good. The prevention and control of wheat pests and diseases should seize the key opportunities, take effective measures, and use the right pesticides to achieve more with less. At the lowest cost, the best control effect can be achieved. The specific control techniques are as follows: Wheat stripe rust and leaf rust strengthen disease monitoring and implement zoning control. In the main winter winter areas such as the southwest and Hanshui River basins, it is necessary to block the affected fields and reduce the spread of bacterial sources. The southwest and northwest bacterial source areas have long-term early development and re-emergence of fields must be moved forward to prevent and control the gates, and comprehensively implement the precautionary measures of “drug detection and managementâ€, and the key areas should also prevent and control the host of Tanabe and others. Spread to the Huanghuai and North China wheat areas to reduce the prevalence of late winter wheat and spring wheat. In the spring epidemic area of ​​Huanghuai, implement the “discovery, prevention and control†preventive measures, and timely control the disease center; when the average disease rate in the field reaches 0.5% to 1%, organize large-area emergency prevention and control, and achieve similar areas. Prevention and control of full coverage. The control agent may be selected from the group consisting of triazolone, diniconazole, tebuconazole, epoxiconazole, oxazolol, propiconazole, ether oxystrobin, pyraclostrobin, pyrimidine nucleoside antibiotic, enebendazole Wait. Wheat sheath blight wheat is returned to the early stage of jointing, and when the diseased plant rate reaches about 10%, spray control is carried out. The drug can be selected from tebuconazole, propiconazole, diniconol, Jinggangmycin A (select high-content preparation), poly-mycin, Trichoderma, Jinggang·wax, etc., which occurs seriously, should be separated from 7 to 10 Spray again once a day. To use the amount of liquid medicine, align the base and evenly spray it to improve the control effect. Wheat powdery mildew is sprayed in the early stage of spring, when the diseased leaf rate reaches 10%. Commonly used agents are triazolone, diniconazole, myclobutanil, propiconazole, epoxiconazole, tebuconazole, prochloraz, ether oxystrobin, enestrobin, etc., generally sprayed 1 or 2 times. On the basis of promoting the cultivation of disease-resistant varieties and strengthening fitness cultivation, wheat scab is to grasp the key period of wheat heading and flowering, and actively prevent the use of drugs to curb disease epidemics. The first is to strengthen cultivation management. Balance fertilization, increase the application of phosphorus and potassium fertilizers; control the number of wheat populations in the middle and late stages, so that the fields and ditches can be smoothed, creating an environment that is not conducive to disease prevalence. The second is active drug prevention. In the middle and lower reaches of the Yangtze River and Huanghuai and other perennial diseases, the wheat area should be actively sprayed in the early stage of wheat flowering to prevent the use of flowers. For high-sensitivity varieties, there are rainy, dew and foggy weather during wheat heading to flowering. For more than 2 days, the first application time should be advanced to the heading stage. The medicinal variety may be selected from cymene, prochloraz, tebuconazole, carbendazim, thiram, thiophanate-methyl, carbendazim, carbendazim, acesulfame, tebuconazole, sputum, tebuconazole. , Bacillus subtilis, Jinggang · Brass, etc., should use the amount of foot liquid, 3 to 6 hours after the application of rain, should be timely after the rain. For areas with high levels of resistance to carbendazim, phenylpropanoids such as carbendazim should be discontinued to ensure the control effect; if the disease is endemic, after the first treatment, it should be treated for 5 to 7 days. ~2 times to ensure control of epidemic hazards. The sporadic area of ​​scab can be combined with other pest control, and the treatment is carried out at the heading and flowering stage. The high-density area of ​​wheat midges should focus on two key links, such as soil treatment in the middle stage and spraying control in the adult stage. The general occurrence area should be controlled by adults before heading to flowering. In the flood season, when there are more than 4 insects per small square soil sample (10×10×20 cm) at the booting stage of wheat, phoxim and fenthion can be used to make toxic soil. It is better to water the water after spraying the poisonous soil. In the heading stage of wheat, when there are more than 25 adults per 10 times of nets, or if you use two hands to open the wheat ridges, you can see phoxim, chlorpyrifos, and lambda-cypermethrin when you can see more than 2 adult worms at a glance. Pesticides such as chlorofluoro-imidacloprid are sprayed and controlled. The re-issue area should be administered twice a day for 3 days to ensure the prevention and treatment effect. When the wheat aphid has reached more than 500 heads in the seedling stage, it should be selected. At the ear of the field, the amount of sputum in the field is more than 1,000, and when the ratio of beneficial to harm (natural enemies: aphids) is less than 1:150, acetamiprid, imidacloprid, anti-carbamate, lambda-cyhalothrin, matrine, Spray treatment of insects such as ear mold. When mixed crops of pests and diseases at the ear of wheat, timely carry out “one spray three preventionsâ€, that is, pesticides , fungicides, foliar fertilizers or growth regulators, etc., and mix and spray. Among them, imidacloprid and acetamiprid should not be used alone, and should be mixed with low-toxic organophosphorus pesticides. In areas where conditions permit, it is recommended to release the bee to carry out biological control; in the middle of March, the locusts in the North China wheat area can be placed in the middle and late March, and yellow traps are placed in the field to trap the winged mites to reduce the number of insect populations and reduce Hazard at the ear. In the southwestern wheat area of ​​the wheat spider, in the seedling stage and early spring jointing stage, the other wheat areas are in the greening and jointing stage. When the average 33 cm line length is more than 200, the avermectin, bifenthrin and mara can be used. The spraying of phoxim, biphenyl, triazophos and other agents can be controlled by agricultural measures such as deep tillage, weeding, fertilizer application and irrigation. Underground pests in the northwest, north China and Huanghuai wheat areas, on the basis of autumn sowing and seed dressing treatment, in the greening period, when there are 1 or 2 underground pests per square meter, you can use the systemic irrigation such as phoxim. Take control. More pesticide knowledge , please pay attention to China Pesticide Network Lacquer Kitchen Cabinet,Lacquer Cabinets,Lacquer Finish Cabinets,High Gloss Lacquer Kitchen Cabinets Ningbo Oulin Import&Export Co.,Ltd. , https://www.oulin-oversea.com