The cultivated area and yield of Chinese pear trees are second only to apples and are cultivated all over the country. Pears have a long life span of more than 100 years. The results are early and the results are long. Some varieties start to produce in 2-3 years, and the fruiting period can last for more than 50 years. Therefore, many fruit farmers also like to plant pear trees, so how do pests and diseases control in the growing period of pear trees? Nanjing Dr. Bang collects the following for everyone:
(1) Dormancy period
Control objects: black spot disease, ring disease, anthracnose, rot disease, scale insect, pear hibiscus, leaf mites, mites, heartworm, pear mites and so on.
Specific measures: 1 scrape the tree body rough skin, disease, remove the pests, dead fruits, leaves, weeds, and take out the park to concentrate or burn. 2 dig the soil under the canopy. 3 trunks painted white.
(2) Budding to the beginning of flowering
Control objects: black star disease, ring disease, anthracnose, rot disease, scale insect, pear hibiscus, leaf mites, mites, pear small heartworm, pear mites and so on.
Prevention
1 scrape off the rot disease lesions, smear with bacteria.
2 flower sequence separation in the early stage of pear garden hanging pear small heartworm insect trap.
3 bud sprouting period spray beauty 5 degree stone sulfur mixture.
4 spray carbendazim or thiophanate-containing fenvalerate or imidacloprid 10 days after spraying the meringue.
(3) Flowering and young fruiting
Control objects: black spot disease, anthracnose disease, ring disease, rust, pear stem bee, pear hibiscus, pear mites, mites, scale insects, leaf mites, pear leaf sputum, heartworm, chafer, scorpion and so on.
Prevention
1 Artificially remove the leaves and diseased fruits of pear black scab, and the leaves of pears and larvae are deeply buried or burned.
2 artificially catch the adults of Pear Stem and cut off the harmful branches.
3 Pear Garden installs a frequency-vibration insecticidal lamp to trap pests such as chafers.
4 young fruit bagging at the right time.
5 Pear stem bee feathers begin to use the dichlorvos Pear tree branches; Pear mites are sprayed with chlorpyrifos on the ground.
6 When the flower is 80%, spray thiophanate-methyl or carbendazim or mancozeb plus avermectin or imidacloprid.
Spraying beta-cypermethrin or chlorpyrifos at the peak of the adult larvae of P. sylvestris, adding mancozeb or thiophanate-methyl; spraying avermectin or chlorfenapyr 3 or cyhalothrin at intervals of 10-15 days , add nitrile or phenidazole; after 10 days spray Bordeaux mixture.
The above is based on the dynamics of the pests and the weather conditions.
(4) Fruit expansion period
Control objects: black spot disease, anthracnose disease, ring disease, black spot disease, heartworm, pear hibiscus, mealworm, scale insect, leafhopper, cockroach, scaleworm and so on.
Prevention
1 artificially capture cockroaches, cockroaches like nymphs, cut off smashed branches, and remove scorpion elephants.
2 promptly check and remove the diseased fruit and diseased leaves.
3 timely replacement of pear small heartworm sex pheromone lure.
4 Spray according to the dynamics of the pests and the weather conditions. Pesticide fungicides are selected from mancozeb, Bordeaux, captan, myclobutanil, thiophanate-methyl, carbendazim, phenamimidazole, bromolocidazole, thiazolone, and prochloraz. . The insecticides are avermectin, chlorpyrifos, chlorfenapyr 3, cyfluthrin, matrine and the like. Note the rotation of the medicament.
(5) Maturity
Control objects: black spot disease, anthracnose disease, ring disease, black spot disease, pear small heartworm, hazelnut, yellowfly, pear hibiscus and so on.
Prevention:
1 Remove disease, insect fruit, and bury it deeply.
2 According to the occurrence of pests and diseases, spray at the right time. The fungicide is selected from the group consisting of mancozeb, captan, myclobutanil, thiophanate-methyl, carbendazim, phenamimidazole, prochloraz, and ethylaphosphorus. Insecticides are selected from Diflubenzuron No. 3, cyhalothrin, carbaryl salt, and matrine. Pay attention to the safety interval of the drug when applying the drug.
(6) After harvesting to the defoliation period
Control objects: black spot disease, anthracnose disease, ring disease, black spot disease, heartworm, pear hibiscus, gooseberry, aphid and so on.
Prevention:
1 Remove disease, insect fruit and bury it deeply.
2 pear garden application of organic fertilizer.
3 spray Bordeaux liquid to protect the leaves.
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