Greenhouse green asparagus underground pests Asparagus hibiscus moth how to prevent? In general, how does this pest occur and how does it cause harm to asparagus? First, the hazard characteristics The larvae are drilled into the stem and sometimes drilled to the lower part to feed the fleshy roots of the asparagus. The damaged plants are yellow and deciduous, and the plants cause death. Second, the morphological characteristics The female moth is 25-30 mm long and the male moth is 20-30 mm long. The antennae are monodentate, with two bases and apex 14 knots smaller; body color is light yellow, posterior margin hairs are pale yellow; ; The middle chest has a triangular white-yellow hair bundle at the junction with the abdomen; a 2 mm wide silver-white skirt with a 2 mm wide and a leading edge of the wing at the leading edge of the fore wing, and a brown spot on the back of the skirt. Approximate triangular fins with 6 silvery white veins clearly passing through the brown fins and extending to the lower edge of the wing; The hind wings are thinner and softer than the front wings, yellow, and there is a net angler in the inner corner of the forefoot ankle. The middle and the end of the hindfoot ankle have one pair, and the outer distance is longer than the inner distance. The egg is oval in shape, and the primipara is yellow-brown and brown in the back. The eggs are piled together, and there are several rows and backs on the surface of the egg shell. The newly hatched larvae are milky white, flat cylindrical, and thick and strong. The older larvae are 20-30 mm long, the old larvae are yellow-brown, with a dark brown head and a pair of well-developed horny molars at the front end. The initialized scorpion is light brown, gradually turning reddish brown, the corpus callosum is 15-30 mm long, black-brown before emergence, and the female is larger than the male. Third, the law of occurrence Asparagus wood moths occur in the first year of Hebei in the first year, and the old larvae overwinter in the soil of 1 meter deep. In mid-April, when the local temperature reached 15 °C or above, the larvae drilled 4-5 cm from the ground to make phlegm and phlegm, and ended in early May. It is formed into moths in about 27 days in the flood season, and is in the late stage of May to early June. Adults inhabit during the day, flying at night, mating to lay eggs, and have a false death. Third, prevention and treatment technology Artificially killing moths works well. Using the phototaxis and chemotaxis of adults, light trapping and sweet and sour trapping. The wilt stem plants are pulled out to eliminate the larvae. The above is the whole content of the prevention and control of the green asparagus underground pests asparagus hibiscus moths. Please have a good reference from the farmers who need it. Application fields of flood control woven bags: PP Woven Flood Bag,PP Woven Flood Sandbag,PP Woven Sandbags Denilco Environmental technology(Suzhou)Co., Ltd. , https://www.wflood.com
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