[Hazard] The habits are hidden. Like the warm and humid environment, greenhouse vegetables have been seriously damaged in recent years. The most germinating young shoots and seedlings cause sprouting. Feeding the heads of vegetables, bamboo shoots, celery and other leaves into holes will affect the value of goods. ã€Morphological characteristics】The body length of the adult body is 30-60mm when stretched, body width is 4-6mm, inner shell length is 4mm, width is 2.3mm. Long shuttle type, soft, smooth and without shell, dark black, dark gray, yellowish white or grayish red. Two pairs of antennae, dark black, a short pair of the bottom, about 1mm, called the front antenna, a sensory effect; upper pair of about 4mm, called the posterior antennae, the end with eyes. There are horny teeth in the mouth. The back of the body is covered with a mantle, which is 1/3 of the body length and rolled up on the edges. There are degraded shells inside, and there are obvious concentric circles, ie growth lines. The center of the concentric circle is to the right of the back end of the mantle. The breathing hole is in front of the right side of the body, surrounded by tiny lines of color. Satky. Mucus is colorless. About 2mm behind the right tentacles is the gonopore. Egg oval, tough and flexible, diameter 2 - 2.5mm. White transparent visible egg nucleus, dark color near hatching. Larval larvae have a body length of 2–2.5 mm and light brown; their body shape is the same. Occurrence regularity: Adults or larvae overwinter under wet soil in the roots of crops. In May-July, a large number of activities in the fields harmed. During the summer, the temperature rose, the activity weakened, and after the autumn climate was cool, the activity was also harmed. Complete a generation of about 250 days, May to July spawning, egg period of 16-17 days, from hatching to sexual maturity about 55 days. The spawning period can be as long as 160 days. Wild pheasant hermaphrodite, allogeneic fertilization, can also reproduce with conspecific fertilization. Eggs are produced in subtle earth seams with high humidity. They are produced once every 1-2 days, about 1 to 32 capsules, and spawn about 10 eggs per site. The average egg production is over 400 capsules. The wild pheasants were afraid of the light and died under the strong light for 2-3 hours. Therefore, they were all active at night and they started to move from early evening. They peaked at 10-11 p.m., and they sneaked into the earth or hidden places before dawn. Strong against hunger, can not eat without food or under adverse conditions. Humid and wet environments are prone to happen. When the temperature is 11.5 to 18.5°C and the soil moisture is 20% to 30%, its growth and development are most favorable. [Control methods] (1) Use sorghum cultivation, mulching, film-breaking and other methods to reduce damage. (2) Apply sufficient organic fertilizer to create conditions that are not suitable for the occurrence and survival of wild beaks. (3) Clear the pastoral and autumn plowing to destroy its habitat, and use the weeds, leaves, etc. to trap insects in the greenhouse or vegetable plots. (4) 5-7 kilograms of quick lime or ash per acre, no fear of alkali, no shell, and mucus on the body. When it comes out of harm at night, the body is stuck with quicklime or ash, resulting in death, and the effect is very good. (5) Chemical control: Use 48% Difen EC or 6% snail net granules to compose a bean cake powder or corn powder bait with active ingredients of about 4%. Active Pharmaceutical Ingredients Refers to the raw materials used in the production of various preparations, and is the active ingredient in the preparations
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