Common diseases and insect pests of planting plum trees and their control

Plum tree in the first time after picking, new shoots 20 cm long when the top, the development of branches 60~80 cm long when the top. If there are many branches, you can thin out some branches; if the branches are not too dense, try to control them as much as possible. By mid-July, weeds should be removed from the orchard.

1. Bacterial perforation,

Available carbendazim, such as bacteria, such as special fungicides for spraying. Serious perforation disease will cause tree death, spray general fungicides do not work, can spray agricultural streptomycin for control, if still can not prevent, can spray veterinary streptomycin for control.

Two, white star beetle

White star beetle likes to eat fruit with wounds, so special attention should be paid to the prevention and control of white star beetle. There are three ways to control white star beetles:

1. Sunflower trapping method In the orchard, 8~10 sunflowers are planted in each mu, and the scent of sunflower is used to lure them. Every morning, a bag is used to cover the sunflower disk, so that the adults fall into the bag, and then concentrated killing.

2, fruit vinegar liquid trap method using white star beetle like fruit vinegar liquid characteristics trap. The preparation method of fruit vinegar liquid: 1 part of fruit, 1 part of vinegar, 2 parts of sugar and 0.5 part of water. Chop the fruit, mix it with vinegar, sugar and water, boil it into porridge, put it into a jar (half a bottle can be used), and then add half a bottle of dichlorvos 500 times solution and mix evenly. In the peak period of adult development of white star beetle, one bottle was hung every 20~30 meters in the orchard, and the height from the ground was 1.2~1.5 meters. The bottle should be close to the branches, and the dead white star beetle should be cleared every morning.

3. In the orchard, according to the standard of hanging 6~8 beer bottles per mu, hang the beer bottle at a height of about 1.5 meters from the ground, catch 2 or 3 live white star chafer adults and put them into the beer bottle, which will lead other adults to fly into the bottle.

Three, plum fruit borer

Li Xiaoborer can be killed with 2.5% trichlorfen 3000 times solution, or 50% phoxim 800 times solution +40% omethoate 800 times solution, or 20% fenvalerate 3000 times solution.

IV. Gummosis

The occurrence of gummosis is related to the harm of wound, freezing injury and Isatis leaf cicada, so try to reduce large wound in pruning, and treat large cut mouth with medicine. During the occurrence period of Isatis leaf cicada, attention should be paid to the prevention and control of drugs. The trees which have suffered from gummosis can be cured by scraping off the gummosis and applying sulfur suspension.

Five. Starscream.

The key to control red spider is to grasp the correct control period, and it must be eliminated before wheat harvest. The mixture of imidacloprid and acaricide can be used for control or 40% dicofol EC 1500-2000 times solution can be used for control.