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2. Raise natural enemies and control pests against pomegranate pests and aphids. Biological control methods can be used to prevent and control natural enemies. The specific approach is to plant rapeseed and other crops in the orchard to serve as breeding grounds for pomegranate pest natural enemies, such as ladybirds and grasshoppers, and to increase the population of natural enemies in the park to control pests. For grass orchards, chickens and ducks can also be stocked to feed on fruit and fruit larvae to effectively control the occurrence of pests.
3, trapping and killing control pests peach aphid is one of the main pests of the pomegranate tree. In view of the biological characteristics of Myzus persicae and avoiding the drawbacks of traditional chemical control that lead to excessive pesticide residues, the trapping and killing method can be used to control pests. There are two main methods: (1) From the beginning of March to the end of June, 8 to 10 sunflowers are planted in the empty space in the garden, and several sorghum and corn plants are clustered to lure the mating oyster to lay eggs. The larvae concentrate before killing, reducing the number of pests. (2) From the beginning of May to the day before harvest, 3 to 5 pieces per mu were used to hunt the "sex lures" of the peach aphids to trap and kill adult males, so that a large number of females could not be mated, which greatly reduced the population of offspring. The quantity thus effectively controls the occurrence of pests.
4. Fruit Bagging Fruit bagging is one of the main measures for the production of pomegranate without pollution. It can effectively reduce the damage of diseases and insect pests to the pomegranate fruit, reduce the pollution of pesticides on the fruit; prevent cracking fruit, improve fruit quality, increase fruit product value. Pomegranate fruit bags are mostly plastic film textures. The bags require air permeability and hydrophobic properties. The bottom of the bag has 2 or 3 air holes with a diameter of about 0.5 cm. This measure is generally carried out 30 days after flowering and is completed in about 20 days.
In addition, after harvesting in the fall, the diseases, insects, and dead branches should be cut off in time, the dry and frozen fruits should be removed, and the litter should be removed and buried. The old dry skin and plug holes should be scraped to eliminate overwintering pests. And the tree trunk is painted white and dry earth is used to prevent overwintering.
In short, the pollution-free cultivation of pomegranates should combine natural laws with scientific management to the maximum extent to eliminate pollution, control public hazards, and achieve pollution-free fruit production in an excellent ecological environment.
Technical points of no pollution cultivation of pomegranate
1. The grass growing in the garden is the cultivation of green manure crops in the orchard and the cultivation of the grass. Grass species include white clover, hairy pods, and alfalfa. After the grass orchard has been planted on the ground, it can be formed on the ground from top to bottom such a complex type of grass as "fresh-aging-self-blight-half-decomposition mechanism." Since a large amount of humus is produced from the dry residue, it can improve the structure of the soil pellet and fertilize the soil. In addition, turfgrass can greatly reduce soil erosion caused by rainfall scouring, avoid soil moisture loss caused by direct sunlight, and reduce the chance of pathogenic spores spreading through rainwater splash on the surface litter.