Occurrence Trend of Main Diseases and Pests of Agriculture in Hebei Province in 2005

According to the investigation of the wintering bases of pests in Hebei Province's agricultural pest monitoring network, combined with long-term climate prediction and farmland ecological conditions, it is expected that the major agricultural pests and diseases in Hebei Province will be moderately heavy in 2005, with an area of ​​450 million mu. Close to 2004. One of the major occurrences of wheat aphid, East Asian migratory locust, wheat midge, wheat sheath blight, soil lice, cotton-blind stink bug, cotton yellow wilt disease, whiteflies, Liriomyza sativae, rice water weevil, rodent damage will be moderate to Emphasis occurs; Fusarium head blight occurs in medium-to-southern regions; wheat stripe rust and meadow grasshoppers are affected by the source of exogenous bacteria (worms), which may be more likely to occur. Especially wheat stripe rust, China's current winter and summer areas (Sichuan, Hubei, Gansu, Shaanxi, etc.) occurred relatively heavy, abundant bacteria source, and the occurrence time is about 10 days earlier than usual. In late March this year, Shandong, Henan and other provinces have discovered the onset of stripe rust. Therefore, wheat production areas in the southern part of our province must do the monitoring and prevention of wheat stripe rust. Vegetable diseases occurred in the protected areas, and the diseases and insect pests of the special economic crops showed an upward trend. First, the wheat pests and diseases: the occurrence of wheat aphid; middling heavy wheat occurs; wheat red spider, wheat leaf bee moderate occurrence in the middle and southern regions, local bias occurs; wheat sheath blight, wheat root rot, wheat powdery mildew and other diseases, moderate Emphasis occurs; Fusarium head blight occurs in medium-to-southern regions; Wheat stripe rust occurs more commonly in the field and there are more abundant bacterial sources. In the event of rainy weather or strong weather, the middle-southern wheat region of our province may have a moderately high prevalence. Wheat bunch dwarf disease and wheat leaf rust disease occurred lightly; Second, cotton pests and diseases: a generation of cotton bollworm occurred light; second generation of cotton bollworm occurred in the middle of the cotton field, in eggplant vegetables, beans, peanuts and other crop fields occurred; cotton seedling disease, cotton wilt disease, cotton blind Cotton seedlings and cotton leafhoppers were moderately weighted; cotton Bemisia tabaci, thrips, Liriomyza sativae, cotton weevil and other insect pests and boll disease were on the rise. Third, locusts: It is expected that the summer plague in 2005 will generally occur moderately, and the partial emphasis on the coastal and reservoir reclamation areas will occur. The key areas are the Zhongjie Farms wasteland, the Haixing Langli Dagu, the Nandagang Reservoir, the Huanghua Yellow Sauce Dagu, Baiyangdian and other places. Occurrence area amounts to 3 million mu, reaching 2 million mu of control indicators. Bandits occur in the northern part of the dam area. IV. Diseases and pests of vegetables and fruit trees: Plant diseases, downy mildew, leaf mildew, and gray mold disease occur moderately, diseases occur moderately, soil-borne diseases such as root-knot nematodes of vegetables occur seriously, and insect pests Liriomyza sativae and Bemisia tabaci paraneia occur . Cabbage, celery soft rot, downy mildew, diamondback moth, cabbage butterfly, underground pests, etc. occur. Summer and autumn virus diseases, bacterial leaf spot disease, zucchini silver leaf disease, whiteflies, Liriomyza sativae, leafhoppers, aphids, and wild pheasants occurred moderately. Crucify Plutella xylostella and other pests are heavier than last year. Goldworms and apple red spiders moderately occurred, P. minors occurred moderately, and apple ringworm disease occurred moderately. Grapevine downy mildew and anthracnose are more serious, and white grape rot disease occurs more seriously. 5. Maize, millet, rice pests and rodents: Moderate occurrence of corn borer. Corn head smut occurs in moderately heavy conditions in the northern producing areas. The occurrence of corn worms is moderate. Ash millet weighed heavily. Corn borer leafworm and maize brown spot disease showed an increasing trend. Corn cultivars such as sunflower mealworms, corn thrips, corn sheath blight, and corn leaf spot occurred moderately, with partial occurrence of overweight. The rice water weevil occurred moderately, with partial overweight occurring; rice blast was moderately mild; rice stem borer moderately occurred; rice smut disease rose. Rat poisoning occurred moderately in the province, with the occurrence of a medium weight in the Bashang area.

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