The first stage: before the middle and late June, the bagged fruit was sprayed 4 times, but not 3 times, with an interval of 7- 10 day each time.
Dosage 1: 7- 10 days after flowering. The main control targets are spot defoliation in spring shoot, powdery mildew, rust and various fruit tree diseases in individual orchards. According to the disease types of different orchards, one of the following three pesticides can be selected according to local conditions: ① For orchards with serious apple lobular disease, 600 times of 53% Baikonur wettable powder can be selected. (2) Disks with mottled deciduous leaves, powdery mildew and rust can be treated with 600 times of 25% propiconazole multi-suspension emulsion or 800~ 1000 times of 30% pentosan suspension or 2000 times of 10% world high water dispersible granules. (3) Spraying 800 times of 50% Xinling wettable powder or 800 times of 80% Sheng Da M45 wettable powder and 800 times of 80% spraying wettable powder in orchards with serious defoliation but no lobular disease, rust and powdery mildew.
In orchards where apple leaf curl moth occurs seriously, it is possible to control stinkbug and apple aphids at the same time by applying pesticides once before and after flowering, and spraying 22% insecticidal EC 800 times before flowering, and spraying 24% Man Mei 5000 ~ 6000 times after flowering, which can be used in conjunction with the above fungicides.
The second dose: spray 800 times of 50% Xinling wettable powder, 1200 times of 20% insecticidal wettable powder or 1000 times of 20% triazophos suspension (1500 times of 25% wettable powder)+100 times of imidacloprid wettable powder. When apple aphid and apple mealybug occur at the same time, it can be mixed with 40.7% chlorpyrifos EC 1500 times solution or 22% pesticide EC 800 times solution to control apple aphid and other leaf-eating pests.
The third dose: bactericide can be sprayed 800 times with 50% Xinling wettable powder, 2000 times with 10% highly dispersible granule, 500 times with 50% carbendazim wettable powder, 800 times with 70% thiophanate-methyl wettable powder, 20% hexaflumuron EC 1500~2000 times or 40 times.
The fourth application: only in the bagging orchard, spray it 2 days before bagging apples, and bag it within 7 days from the date of spraying, so as not to reduce the efficacy. You can choose to spray 800 times solution of 50% Xinling wettable powder or 800 times solution of 70% thiophanate-methyl wettable powder (suitable for Japanese Caoda Company, domestic Shandong Huayang Technology Co., Ltd. and Jiangsu Taicang pesticide plant white export products) without mixing pesticides and acaricides, and spray separately.