Cutting off branches of disease and insects Cutting off branches of disease and insects is a key measure to alleviate the source of overwintering insects and diseases. For heavily damaged trees, re-cutting can promote growth and restore tree vigor. Combined with winter shears, the overwintering parts of fruit tree diseases and insect pests such as apple nest moth, apple top leaf curl moth, pear eye beetle, pear big borer, big green leafhopper, apple powdery mildew, pear black spot disease, diseased branches, insect branches and diseased branches Insect shoots, diseased buds and insect buds are completely cut off, and the effect is good.

Scraping bark is often lurking in various pests such as pear borer, apple leaf curl moth, jujube armyworm, pear star caterpillar, etc. in the rough skin, warped skin and cracks of fruit trees. Before fruit trees germinate in early spring, thoroughly scrape off the thick skin and cut cuts on the branches (especially the branches) to eliminate a large number of overwintering pests. It is advisable to scrape off the light brown cortex to see the green but not the white; when scraping the skin, lay a plastic cloth under the tree to collect the scraped bark and debris, concentrate it deeply or burn it. For fruit trees with rot and dry disease, apply stone sulfur mixture after shaving.

Tree planing in early spring is not only an important measure to improve soil and promote fruit production, but also an effective method to eliminate overwintering pests. Through deep planing, pests (such as peach borer, peach borer, etc.) and germs that overwinter in the soil can be turned to the surface and frozen to death, dried to death, or pecked by natural enemies, allowing some litter and weeds on the ground The bacteria and pests in mid-wintering were buried deep underground and suffocated.

Before the overwintering larvae were unearthed, the mulching film was glued into pieces according to the size of the canopy projection, and a slit was cut from one side to the midpoint. Around 20 cm, the rope is tightly connected to the trunk, and the mulching time lasts until the beginning of September. It has obvious effect on reducing the damage of pests such as red spiders and peach borers.

(Source: Agricultural Science and Technology News Author: Liu Yuzhi)

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