Pest control In general, from July to August, red (white) spiders, leaf miners, leaf roller moths and early defoliation should be the focus of prevention and control. Prevention of red (white) spiders can be used to kill fleas and other insecticides such as Qigensu, Qiling, and Green Tornado; the most effective agent for preventing and controlling leaf miners is diflubenzuron 3; control of the tip leaf roller moth can be used for pyrethroids such as killing Inhaled pyrethroid, high-effective hydropermethrin, with the better efficacy of pyrethroids plus diflubenzuron 3 against leaf roller moths; difenoconazole, tebuconazole, and generations used for the prevention and treatment of early deciduous disease (Apple brown spot) Manganese zinc, polyoxin, agricultural anti-120, thiophanate-methyl, Bordeaux liquid and other agents.
Top dressing watered every tree in July to catch 50 grams of urea, 50 grams of potassium dihydrogen phosphate, 30 to 40 cm from the trunk around the digging 5 to 6 cm deep ring groove, applied fertilizer after the cover soil, such as single application of urea can be sprinkled Apply around the small tree (also 30 to 40 centimeters from the small tree), and then look at the rainfall. If the weather is dry, you should water it in time. The tree should be sprayed once every 10 to 15 days of urea 300 times or potassium dihydrogen phosphate 300 times, or combined with 300 times the solution of urea. In August, irrigation should be controlled. Pay attention to the timely drainage of the orchard rainy season, and timely planning after rainfall or after watering, in order to loosen the soil and maintain the soil moisture, in addition to the removal of weeds.
Tree management 1. Immediately erase buds or lateral shoots 50 to 60 cm below the ground. In July and August, when the length of the center tip exceeds 60 to 70 cm, the heart is picked up (the tip of the tip). The center of the apple tree where Sanyou is cultivated cannot pick up. 3. The treatment of the second tip (ie, the competition branch) under the center of the shoot takes softening and spraining the branches to change the growth direction, weaken the basic growth, and promote the healthy growth of the center tip. Up to 7 to 8, can eliminate the second bud. 4, for the central tip skew or small trees do not stand upright, to be next to the tree next to a pole, tied with a rope to the center tip or a small tree, righting support.
Leave a protective band to ensure the normal growth of new saplings, must be set aside 1 meter wide protection zone. In the wheat field, the apple tree should be expanded as much as possible in order to prevent defoliation or death of the young tree due to changes in the small environment surrounding the young tree after harvesting, and a one-meter-wide protection zone is also provided after the harvest. No high-stem crops such as corn and sorghum should be planted between rows, and low-yielding crops such as peanuts, mung beans, and sweet potatoes should be planted. In addition to planting vegetables harvested in the fall, other vegetable varieties can be planted.
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