The scientific name is Stibaropus formosanus Takado et Yamagihara from the order Hemiptera, Smilax. Alias ​​roots, roots, ground melting, floor bugs and so on. Distributed in North China, Northeast China, Northwest China, and Taiwan. Hosts wheat, corn, millet, sorghum and grass weeds. Injury characteristics, nymphs sucking the root of the host nutrition. When disease damages wheat, it begins to show symptoms in the middle and late April. In the middle of May, yellow leaves, culms, and fried awns. Had died earlier in the first half of the month, resulting in fewer spikelets and fewer dry weights. When sorghum and corn were damaged, seedlings appeared seedlings, plant dwarfs, and green and dry crops did not agglomerate. Yields were reduced by 20% to 30% or spotted. Morphological characteristics Adult body length of about 5mm, nearly oval, orange to dark red, shiny. Antennae 5, compound eyes light red, 1 pair of monocular tan, with a row of short stab courses on the front edge of the head. The chest is wide, the small scutellum is triangular, the forequarters are half leathery, the ends are half-membranous, and the hind wings are membranous. The forefoot is short in leg, the tarsal is slightly longer, and the dark brown in the ganglion becomes "claw hook." The midfoot leg is thick, the intestine is like a short rod, and the lateral anterior border has a row of broom-like burrs; the hind leg is thick. Eggs are about 1.2mm long, oval, light blue to milky white or dark white. The nymphs of the last-instar nymphs are similar in length to adults, and their head, chest and wing buds are yellow to orange-yellow, with three yellow lines in the abdomen and abdomen white. Living habits in Shandong occurred in 2 generations in 1 year, 3 generations in 1 generation, adults or The nymphs winter in the soil at depths of 30 to 60 cm. Overwintering adults in the following year gradually rose to the cropping layer infestation and copulation in April, spawned in the middle and late May, egg period 26.6 days, a large number of nymphs appeared from early June to mid-July, and the nymphs were 5 instars, each age During the 30-45-day period, the roots of crops such as wheat, sorghum, and corn are harmed. After the nymphs pass through winter and reach between June and July of the following year, the mature nymphs emerge. The nymph stage and adult stage require about 1 year, and when the conditions are unfavorable, the nymph stage can be Up to 2 years. Generations are not neat enough and there are overlapping generations. Shaanxi is also a 2-year-old generation. The overwintering adults of the following year are mated and spawned from June to July. The egg period is 30 days. Nymphs hatch in mid-August to early September, winter in late October, and begin in mid-April the following year. They enter the nymph-damage period in mid-April to mid-July, and winter after mid-July to mid-August. In the third year of adult nutrition, mating spawning, l5 days before the oviposition. Mianzhou, Liaoning Province completed one generation in two years or 2.5 years. Overwintering adults laid eggs in July. The fast-growing ones emerged as adults in August of the following year. Adults used to overwinter. For the slow-growing populations, two winterings are required, and the adult mosquitoes are feted from June to July in the third year. 2.5 years to complete a generation. The insects have a feign death, can secrete smelly fluid, and mate in the earth. The eggs are loosely distributed in a 20-30cm thick layer of soil, and the number of eggs laid is hundreds of grains. Adults in June-August when the soil temperature is higher than 25°C, or after the weather is hot and rainy or after irrigation, part of the adults emerge from the sun, and the body is slightly dry to crawl or fly low. Drought happens in years. Control methods (1) Wheat and non-grass crop rotations were implemented. (2) Apply 3% methylisosalphos granules before sowing, 3kg per 667m2, and sow in the sowing ditch for soil treatment. (3) It is also effective to spray 2.5% methylisophos- phine or other organophosphorus pesticide powder at noon after rain or irrigation. L-size Onions,Big Size Onions,L-size Red Onions,Big Size White Onions Yirun Agricultural Cooperative , https://www.yiruncn.com