Vegetable planting and shed isolation

After the high temperature and stuffy sheds in summer, the pests and diseases in the sheds are basically eliminated, but many sheds still appear pests, especially thrips and other pests. What is the reason? In fact, most of these pests are spread from the---

Pear tree pollution-free management technology

Pear Tree Anniversary Pollution Management Technology Pear, China has a long history of cultivation, and there are no more than a thousand varieties of cultivars. Western pear is native to Europe, and the basic native species is only one type of western pear. Pear trees have a characteristic that---