1. Flower buds sprouting period (mid-to-late March) Strictly inspect, scrape, and saw dry branches damaged by dry rot, remove rot, dry rot, ringworm, scorpion, apple bud, tip leaf roller moth, etc. Damaged pests and branches, fine scraping and treatment of warp skin, sickness, scraping off parts of the drug-enriched cirrhosis 20 times liquid plus chlorpyrifos 500 times liquid mixture. The garden spray 3 ~ 5 Baume degree of lime sulfur plus phospho-1500 times liquid (with the spray), prevention and treatment of trunk diseases, kill scale insects, apple tumor nevus, cotton peony, yellow peony, green nymphs, etc. Insect pests.
2. Inflorescence segregation period (early April) This period is the peak period of natural enemies, various insects, and leafhoppers. It is necessary to prevent and control the pests to prevent them from killing pests. In the fruit area of ​​apple blossoms, the whole garden should be sprayed with chlorpyrifos 1000 times solution, or kill pesticides such as phosphorus phosphatase, and treat pests such as green locust cricket, apple plague, and yellow peony. At the same time can be sprayed with a mixture of 1% zinc sulfate and 0.25% ferrous sulfate, and treat lobular disease and yellow (flower mosaic) disease, improve flowering during fruiting and so on. For apple orchards with heavy emphasis on leaf roller moths and leaf miners in the previous year, they should spray 20% zilosulfuron suspension agent 5000-6000 times and treat apple leaf roller moth. The garden carefully sprays 1.8% avermectin EC 3000 to 4000 times, or 20% Tetramethine WP 2000 times, the main anti-hawthorn spider mites, and the two-spotted spider mites on grape technology can be seen in the southern cultivation of grapes technology.
3. Apple flowering period (mid-to-late April) In this period, we carefully sprayed a mixture of 1000 to 1500 times boron (boron) and 1000 to 1500 times of urea and 500 times of sucrose to enhance fruit setting. Rate and flower quality rate. Rainfall during flowering should be enhanced by artificial pollination. Fuji apple orchard sprayed 1.5% polymycin wettable powder 500 times to control apple mold disease.
4. After flowering until bagging (May)
1 disease. For early defoliation diseases such as spotted deciduous disease and brown pedicel disease, fluorosiliconazole 8000 times, polyoxin 1000 times, or fluoxone 1000 times, etc. can be used for spray prevention. After the bagging garden begins with Xiehua, the above agents are selected and sprayed with calcium fulvic acid or 600 times the amino acid calcium, sprayed once every 10 days, and sprayed three times to prevent bitter pox caused by calcium deficiency.
2 Insect pests. For the apple fruit damage area, should be used 48% chlorpyrifos 1500 ~ 2000 times liquid or 40% phosphorus phosphothene 1000 ~ 1500 times liquid, and the above fungicides and calcium fertilizer spray mix, to be sprayed into rain wet. For an orchard that is not harmed by apple aphid, imidacloprid 3000 times solution or avermectin 5000 times solution or avidinil 2500 times solution or high efficiency cypermethrin 3000 times solution or green kungfu 3000 times should be selected (discussed above Calcium Fertilizer Spraying), killing aphids, leaf curlers, gold-grained moths, and borerworms. In addition, the end of spring and early summer is a high incidence of aphid and leafhopper breeding, which should be strictly monitored.
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