What kind of pests do seven-star ladybugs eat?

What kind of pests do seven-star ladybugs eat? How do seven-star ladybugs reproduce? Also ask netizens to help introduce the land network to sort out the seven-star lady beetle can control pests and breeding methods, listed below for netizens' reference. Pests that can be controlled by Coccinella septempunctata: adults of Coccinella septempunctata can prey on cotton aphids, wheat aphids, cowpea aphids, cabbage aphids, corn aphids, sorghum aphids, aphids, leaf mites, whitefly, corn borer, cotton bollworm and other larvae and eggs. Seven-star lady beetles are distributed in Beijing, Liaoning, Jilin, Heilongjiang, Hebei, Shandong, Shanxi, Henan, Shaanxi, Jiangsu, Zhejiang, Shanghai, Hubei, Hunan, Jiangxi, Fujian, Guangdong, Sichuan, Yunnan, Xizang, Inner Mongolia and other places. Seven-star lady beetles can be found in farmland, forests, gardens, orchards and other places. Usually in the spring, once the temperature rises above 10 ℃, the overwintering seven-star lady beetle wakes up and begins to move, which can be found in wheat and rape plants. In summer, with the increase of temperature and food, seven-star lady beetles multiply in large numbers. They can be found on plants parasitized by aphids and scale insects, such as cotton, willow, locust, elm, beans and so on. Artificial feeding method of Coccinella septempunctata: artificial feeding of Coccinella septempunctata can collect natural feed-aphids in the field, but this method takes a lot of work and sometimes is not easy to be collected. Therefore, a large number of aphids are artificially cultivated to meet the consumption of seven-star ladybug. Aphids can be cultured artificially with broad bean seedlings. When the separately planted broad bean seedlings grow 3mur4 cm high, a small number of aphids collected in the field are placed on the bean seedlings and cultured for 15 days at room temperature 20 ℃ and relative humidity 60% RH 70%. Aphids can multiply in large numbers, and aphids can be used as feed for ladybugs. Seven-star lady beetle artificial breeding method: put the seven-star lady beetle in a glass bottle, put a piece of papyrus at the bottom of the bottle, and put a small bottle cap containing wet medicine cotton balls on the paper to maintain the humidity in the bottle. Cover the bottle with gauze and fasten it with a rubber band. Put two pairs of seven-star lady beetles in each bottle and throw the feed once a day, so that they can live a normal life and reproduce. Coccinella septempunctata goes through four different developmental stages: egg, larva, pupa and adult. If the adults of Coccinella septempunctata are raised in captivity, the indoor temperature should be controlled between 20 ℃ and 25 ℃, and the relative temperature should be 70% 80%. When adults lay eggs, the temperature should be higher, and it can be reared at 25 Mel. But it is better to raise larvae at an average temperature of about 20 ℃. Usage of seven-star lady beetles: after a large number of seven-star lady beetles multiply, they can be put into the field to help human beings eliminate aphids and scale insects. If there are a large number of aphids in the cotton field, Coccinella septempunctata can be scattered into the cotton field, and it can eat the aphids. When distributing seven-star ladybugs, put seven-star ladybugs while walking in the cotton field, and put a few of them in a few steps, in order to spread evenly. Pay attention to one, grasp the release time, it is appropriate to release in the evening. Because of the low temperature and dark light in the evening, the seven-star lady beetle is less active and not easy to migrate. Pay attention to second, the use of adults and larvae mixed. Because the larva does not have the ability to migrate and does not escape, and it also has the ability to eat aphids. Third, stop feeding the day before distribution and then release it, which can reduce the migration ability of Coccinella septempunctata. Fourth, do not carry out ploughing and other field management within two days after release, so as not to frighten the seven-star lady beetle to flee. Click to get more herbicide application techniques