At present, the apple tree enters the peak growth period. At this time, it is in a hot and rainy season. When the soil moisture is too much, the roots of the fruit trees are poorly ventilated, which will inhibit the growth and absorption of roots. At present, the management focus of the apple orchard is to strengthen the nutrient supply; trim the excess branches and control the long shoots; ensure the normal growth of the leaves, promote the rapid expansion of the fruit; promote the full bloom of the flowers, prevent the mid-maturing varieties from falling; strengthen the prevention and control of pests and diseases, Make sure this year's harvest. The current management measures of the Apple Orchard are introduced as follows:
Strengthening the supply of nutrients, especially when the trees are characterized by uneven leaves, yellow leaves, irregular leaf colors, yellow leaves and leaves, should immediately strengthen the nutrient supply of the fruit trees. Use speed supplement - boron molybdenum magnesium zinc calcium amino acid nutrient solution fertilizer 300 times solution or potassium fulvic acid 600 times solution, spray once every 10 to 15 days.
In addition, at this time, when the fruit is inflated, trees with more fruit are to be topdressed to promote rapid expansion of the fruit. Phosphate-potassium fertilizer should be the main method, and each adult-aged fruit tree should be applied with high-potassium and low-nitrogen fruit trees for 1.5-2 kg or 5-6 for yellow humic acid.
Summer and autumn pruning in summer and autumn, fruit tree pruning should focus on clearing the work, clearing the long branches in the tree shrews and the long strips at the cut-saw; the fruitless branches that affect the ventilation and light transmission of the trees should also be stripped or retracted. In addition, the ineffective branches in the middle and lower parts of the canopy should also be removed.
For the varieties of mid-maturing varieties, such as Hongxing, Shouhong, Marshal and other pre-harvest fruit drop, the spraying should be carried out in August to prevent fruit drop: generally choose 20% naphthaleneacetic acid and 30-40 kg water. Spray wet fruit handle is the main, this month should be carried out 1 or 2 times. This method can not only shake the fruit, but also promote fruit coloring.
Strengthening pest control The most important thing at the moment is to prevent early defoliation. In the past, due to the rainy days, in this case, quick-acting pesticides, such as 9281, should be used for spraying to prevent the infection of the bacteria quickly. After spraying the quick-acting pesticide, as long as the agent can be dried on the leaves. , it can play a very good bactericidal effect. The efficacy of this kind of medicine is about 7 days. After the sunny day, it should be sprayed with long-acting medicines such as bactericidal, bacteriostatic, and multi-antibiotics.
Note that flood control and weeding are more rainy this year. Water should be drained immediately after rain. Clay orchards should pay attention to the soil to prevent roots. The weeds with more weeds are weeded in time, and it is recommended to cut them down. It can also be weeded with chemical herbicides, with glyphosate 30 times solution (to eradicate perennial malignant weeds) plus killing 1000 times liquid or 300 times washing powder, or using gram without 300 times liquid to help kill 1000 times liquid. Quick kill weeding.
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