The scorpion worm is also known as the parasite, nymphalid, pupa, and soft palate. It is a gastropod, a stalk, and a pupa. The snail, which is shaped like a shell, is a kind of mollusk that damages fruit trees, vegetables, flowers and crops, and is mainly distributed in the area south of the Yangtze River. In recent years, it has been damaged in the northern greenhouse. In the spring of 2004, sporadic damage was seen in the peach sheds of Changli County, Funan County, and Laoting County. From February to March this year, some peach sheds were seriously developed. In early March, pests began to injure larvae in greenhouses. The author conducted a preliminary investigation of the occurrence and prevention of the disease, which is now described as follows: The morphological features are spindle-shaped black or gray-black, body length 23 ~ 28 mm, exposed without shell, the front of the head has two pairs of antennae, the foot is white or yellow-white, hermaphroditism. Newly hatched and adult cicadas are the same in appearance, and generally develop into adult body within 5 to 7 months. Eggs are milky white and transparent. The egg piles are produced at 3 to 4 cm below the soil, with 7 to 8 grains less and 20 grains more, and the egg grains adhere to each other in chains. 2. Living habits include larvae, adults, wintering on the roots of peach trees and damp mud. Spring and autumn spawn on weeds and dead leaves. In a dark and humid environment, the humidity in the shed increases, and the heavier it occurs. 2 generations occurred in 1 year. Staying in the darkness, diving into the earth during the day or hiding under wet soil in the greenhouse, it is resistant to hunger. After dusk, one after another climbed out of the ground and grazing. Before dawn, it sneaked into the soil or the roots of the trees. The activity peaked at 10 to 11 o'clock in the evening, and the traces of white mucus were often left after passing through. He was afraid of light and died 2 to 3 hours under strong light conditions. Eggs are spawned from mid-March to early April, and larvae occur in late April. The second generation of eggs is produced from late September to late October. In the spring and autumn, the sweltering and high humidity in the shed is conducive to the occurrence of turbulence. There are more mists flowing down the front of the shed. After the uncovering sheds, the high-temperature drought stops in July and August. The sneak into the soil, haystacks, clods, and the roots of crops. Summer. The greenhouse cultivation can take place on an anniversary. The main pests are fruits and leaves, and the leaves are damaged to form holes or nicks; the young fruit forms a band-shaped scar on the damaged fruit surface; the mature fruit forms a gap on the damaged pulp. Also take peach roots. The victimized crops included strawberries, cabbage, rapeseed, lettuce and parsley. The cabbage was the most affected. 3. Control methods Prevention and control of cockroaches must adopt the “prevention-based, comprehensive prevention and control†strategy, according to their living habits, comprehensive management. Agricultural control measures: greenhouses need to be airy and clear, remove all kinds of debris and weeds, drain water, reduce soil moisture in the shed, prevent excessive humidity, cover with plastic film, and create cultivation conditions that are not conducive to the occurrence of earthworms; After water, in the rain, in the morning, in the evening, on a cloudy day, climb out of the habits of feeding activities, artificially catching or releasing chickens and ducks to eat with iron wire; weeding loose soil, exposing part of the eggs to sunlight and sun; Apply 5 to 7 kilograms of quicklime, so that the lime will lose water and die after being crawled; in the affected area, grass will be sprayed with wood ash. Invasive pests in the north, often through the application of cake fats such as coconut slag produced in the South, or through the application of chicken droppings (when using chicken feed, the body or eggs of the worms or eggs in the fishmeal often fall into chicken droppings) Spread, so organic fertilizers should be thoroughly cooked before they can be applied. It is best to compost with high temperatures. Chemical control: The prevention of warts must be held at a favorable time, usually in the afternoon or evening. According to the test, 50% paraldehyde WP wets the plant and the ground with 1000 times, 6% Mita granules 0.5 kg or Helicobacter 0.6-0.8 kg mixed fine soil, spread on the hazy ground. The effect is better, but you must avoid long-term use of a single type of pesticide. It is also possible to use cabbage leaves to mix and kill the above pesticides. Herbal control: "Cang Chuang Mixture" is an ideal drug for prevention and treatment, and its control effect is over 98%. Its prescriptions are 300 grams of herb, 300 grams of calamus, 300 grams of Maple balls, 150 grams of pepper leaf, 150 grams of savory herbs, and 300 grams of wood. The above medicine may be powdered or with 15 kilograms of water decoction. Powder or concoction can be sprinkled or sprayed on 240 square meters of ground. Wet ground available powder; dry to spray water.
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