Hebei Yanshan red small package chestnut manufacturer takes you to know: why does fresh chestnut grow insects

Peach borers are mainly larvae. The first generation larvae mainly destroy plum, apricot and early ripening peach fruits. The second generation larvae destroy corn, sunflower trays, castor ears and grains, as well as peach fruits in the middle and late stages. The third generation larvae mainly destroy chestnuts. Speaking of chestnuts, chestnuts are usually thin and the grain is not full. There are granular residues in the wormhole. In serious cases, the whole chestnut in the fresh chestnut will be eaten and will not produce any fruit. The eyes of the peach pit are relatively large, and there are obviously insect feces outside, so it is easy to choose when buying. As long as it is cleaned, the chestnut bags will not grow out. Therefore, under normal circumstances, it can be seen when harvesting in Li Xiang. General consumers seldom see such errors after the selection and processing of collection agents and wholesalers. Chestnut weevil is also called endophytic fungus. Once every two years, mature larvae overwinter in the soil, continue diapause in the second year, and pick in June of the third year. Adults emerge after about 25 days and mature in soil for about 8 days. In the first ten days of August, adults are dug out one by one. They go to the tree to eat branches and chestnut buds to absorb nutrients. From mid August to early September, drill holes in chestnut buds to lay eggs. Adults bite the buds and seed coats of chestnuts and lay eggs in chestnuts. Usually, each chestnut lays an egg. About 10 days later, the larvae hatch, eat chestnuts, and excrete the worm's feces into the worm. After the harvest of chestnut, the larvae continue to develop in the fruit, and the damage period is more than 30 days. From late October to early November, mature larvae are dug out of the fruit and enter the soil. Throughout the winter, their indoor soil depth is 5-15 cm. The chestnut weevil is spindle shaped, fatter, shorter, thicker in the middle body, thinner in the head and tail, and shrinks into a soybean shaped ball. The hole of the chestnut weevil is usually clean without insect dung. For chestnuts with weevils, take out the chestnuts after purchase, and the insects in the chestnuts will continue to grow. Even if they are refrigerated, their growth will not be inhibited. After leaving the warehouse, if the temperature is right, it will still climb out of the chestnuts. I feel there is no way to clear the error. Chestnut weevil is widely distributed, and can be found in any place with chestnut plants in the chestnut family. It's just that there are many places, few places, and some places are even few. The occurrence pattern of this pest is roughly as follows: the thorns of chestnut trees are more prickly than short and sparse thorns. Early maturing varieties suffer less damage than early maturing varieties; Grafting is less harmful than fruit trees; The damage of flat land is smaller than that of mountain fruit trees; Usually under the tree. Well managed grass is lighter than unmanaged grass. Chestnut trees are not as clean as hazelnuts and oaks near chestnut trees. It takes a long time and a lot of effort to control this insect. Therefore, generally speaking, fresh chestnuts will not grow insects. Fresh chestnuts with worms are the first choice, because chestnuts will encounter chestnut weevils during their growth. In terms of price, the price of chestnuts with weevils is much lower than chestnuts without weevils. Many illegal suppliers mix these chestnuts with harmless chestnuts, which are fake.

The above is what Hebei Yanshan red small package chestnut manufacturer brought you to know about why fresh chestnuts grow insects. Hebei Yanshan Red Food Co., Ltd., founded in September 2000, is a comprehensive production enterprise specializing in the R & D, processing, production and sales of agricultural and sideline products such as chestnuts and peanuts. The company covers an area of 20000 square meters and a construction area of 6000 square meters, including food processing workshops, low-temperature warehouses, quick-frozen warehouses and high-temperature warehouses. If you have any need, please contact us!