The Prevention and Control of Diseases and Pests of Three Major Fruit Trees in Early Autumn
The early autumn of the apple tree has a large amount of rainfall. It is prone to rotten fruit rot disease in unbagged orchards. After the onset, it should be sprayed with 600 times liquid 50% carbendazim plus 600 times liquid inoculation cream plus 1000 times liquid to help kill every 7 to 10 days. Spray once.
The effective pharmaceutical agents are copper preparations and tebuconazole. After occurrence of brown spot disease, care should be taken to inhale tebuconazole and sterilize it. After 5 to 7 days, it is sprayed with Bordeaux to protect it.
Insect pests mainly consisted of gold moth, apple leaf roller moth, pear borer, peach borer, and were sprayed with 25% diflubenzuron 2000 times, 20% exfoliate 2000 times, and 48% Lethbone 2000 times respectively. Conduct prevention and treatment.
In the early autumn, pear trees are prone to scab, and the control method is to alternately inject 2,000 times special zepoline or 25% difenoconazole 8000 times every 7-10 days. An orchard that has not yet developed, spraying a sterilizing biocide immediately after the rain, such as 50% carbendazim 600-fold, 80% epimedium 600-fold, 70% thiophanate-methyl 800-fold, and Fuxing.
Peach fruit in this period is susceptible to scab and gum disease. It should be selected as follows: 1.5% erperidone 800 times solution or 50% zein zinc 500 times solution. 7 to 10 days before picking, phenoxy oxcarbene was used to control pear borer and peach pods. After fruit removal, the leaves should be protected. Perforated disease should be prevented by zinc ash. The moths and leaf roller moths should be sprayed with 4.5% beta-cypermethrin for 1500 times and Lesper 2000 times for control.
The late-maturing varieties focus on the prevention and treatment of borerworms, and the use of pheromone enhances the forecasting and forecasting. Three to five days after the emergence of adult worms, high-selective phenoxyoxime 1000-fold, chlorpyrifos high-chloride 1500-fold, and avid-chloride 2000-fold can be selected. spray.
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