Weibei Apple Tree Management Points in August

First, the management dictates that the temperature at the beginning of the autumn season is changed, and the pest prevention and control are uninterrupted. Fall fertilizer and autumn crops, weeds and grasses to prevent drought.

Second, the phenophase growth during the phenophase, flower bud morphological differentiation, ripe fruit maturity, mid-to-late ripening fruit into the expansion phase, the fall will generally increase after the beginning of autumn, early fallow disease is prone to occur, early in the second generation there are still two generations of fruit tree on the spawning damage fruit The vegetative growth is dominated by carbon metabolism.

3. Main tasks This month's management objective is to improve the photosynthetic capacity of leaf organs, extend the life span of leaves, and accumulate as many photosynthetic products as possible, which will lay a good material foundation for current fruit development and flower buds in the coming year.

1, autumn scissors timely pull branches, hanging branches, sparsely cut, short cut, ring cut, in addition to pests and fruit.

2, except for bag harvest early, medium-maturing varieties about 15 days before pre-harvest bag removal, picking leaves, fruit transfer, shop reflective film, unbagged fruit removal of the same fruit around the "leaf" and 15 cm from the fruit shading leaves , And turn fruit to make it full color, according to market demand, according to the actual situation in batches harvest.

3, Clever top-dressing can spray 0.3% fine potassium dihydrogen phosphate, humic acid liquid fertilizer, composite micro-fertilizer or 0.3% -0.5% potassium sulfate, or 2% -5% ash leaching, weak trees can add 0.3-0.5% urea To improve leaf function and fruit quality. For Red Fuji, it is also possible to apply potassium sulfate alone and apply 0.3%-0.5% kg/plant.

4, pest control in case of a single pest, can be targeted drug spray control. Early spraying is intended to prevent the second generation of borers, leafhoppers, rot, anthrax, brown spot, and spotted deciduous disease. Anticorrosive rot disease should be in the formation of the skin layer in August, insist on scratching off the rough skin, warping skin and the skin layer. At this time, the infected rot disease is easy to find in the superficial, and the small lesions can be promptly scraped off. Treatment, scrape, coated with peracetic acid, bacteria poison clear.

5. About 40 days before calcium supplementation is a peak period of calcium absorption. It is better to spray 1-2 times calcium in late-maturing and late-maturing varieties. Calcium supplementation with a new state-level new product full of water soluble Merrill Lynch high-performance calcium.

6, Drought prevention and drainage If the long-term drought can apply water fertilizer or watering the tree disk, if there is heavy rain and continuous rain should be drained in time, the water can not exceed 24 hours, shallow cultivators after the rain, loose soil ventilation, anti-rootstock disease.

7. Grass and grass cover Grass should be planted in time when the rain is good, and legume green fertilizer plants planted in June can be turned over in mid-late.

8. Change the head and use the “T” shape buds or take the wooden buds to make a high replacement head, and then do not cut the anvil afterwards, and then cut the anvil before spring sprouts in the following year.

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