Remind | Hebei experts: the high incidence of insect pests These three pests should pay close attention to prevention and control

Hebei News Network News (Hebei Daily reporter Hao Dongwei) learned from the Hebei Provincial Plant Protection plant inspection station that recently, adult corn brown foot horn thoracic lobe beetle and double-spotted long-tarsal leaf beetle adult began to enter the initial period of harm, and it is necessary to pay attention to strengthening investigation and treatment. According to the base of three generations of cotton bollworm residues in various places, combined with ecological conditions and comprehensive analysis of meteorological forecasts, it is predicted that the overall occurrence of three generations of cotton bollworms will be light, and the local insect amount of corn, peanuts and other crops will be high, and the central and southern parts will enter the peak period of eggs of three generations of cotton bollworms around July 17, and the northern part will enter the peak period of egg laying of three generations of cotton bollworms around July 21, which is comparable to the normal year.

The survey of summer corn field in Pingshan County, Shijiazhuang Shows that the average rate of brown foot horn pectoral beetle beetle is 1.3%, the highest insect rate is 10%, and the average amount of insects is 1.5 heads/100 plants, the highest is 26 heads; the census of summer corn field in Dingzhou City shows that the brown foot horn thoracophalus began to occur, the amount of 100 insects in light occurrence plots was about 9, and the number of 100 insects in individual heavy occurrence plots was more than 35, and the leaves were bitten into holes.

It is understood that the brown-footed horned pectoral beetle belongs to the Coleoptera family, which is an insect pest that occurs in the farmland patches of Hebei Province, and in Hebei Province, in addition to harming corn, it is also harmful to peanuts, millet, soybeans, sorghum, sunflowers and other crops. Brown-footed horned pectoral carapace occurs once a year in Hebei Province, mainly by adult insects to bite crop leaves into holes or meshes, and in severe cases, it can eat out the leaf veins, affecting crop yield. The pest generally sees adult insects in Hebei Province from the end of June to July, the peak of adult occurrence in mid- and late July, and the peak of occurrence in early August.

According to the investigation of plant protection stations in the north of Zhangjiakou Wanquan District and Wei County, adult double-spotted long-planted fireflies began to enter the peak of harm. Double-spotted long-planted firefly is a genus of Coleoptera leaf beetle family, which occurs once a year in Hebei Province, mainly in the northern spring corn area, with adult insects eating corn leaves, young leaves are bitten into holes, corn after the male spit silk, adult insects eat anthers, filaments, affecting the normal flowering and pollination of corn, feeding on seeds during the filling period, affecting grouting.

Agricultural experts suggest that for plots with a high number of double-spotted long-planted firefly beetles (when the average single spike of double-spotted long-planted fireflies on the filament is more than 5), you can choose to spray in the early morning dew after steaming drying or in the evening. Considering its strong activity, the agent needs to select high-efficiency cypermethrin, cypermethrin, thiamethrin, high-efficiency cypermethrin, octylthion, chlorantranium benzamide and other insecticides with contact killing and gastric toxicity for spray control.