In September, the growth of apple trees is about to enter the peak period. The growth of apple trees is very important during this period, so the apple growth peaks in September, paying attention to strengthening field management.
When the soil moisture is too much, it will cause poor ventilation of the roots of the fruit trees and inhibit the growth and absorption of the 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:
Apple trees strengthen nutrient supply
Especially when the tree is characterized by uneven leaves, yellow leaves, irregular leaf color, yellow leaves and leaves, the nutrient supply of the fruit trees should be strengthened immediately. 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 10-15 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 tree should be applied with high-potassium and low-nitrogen-type fruit trees for 1.5-2 kg of fertilizer or 5-6 of chashy humic acid potassium fertilizer.
Apple tree summer and autumn trim
In summer and autumn, fruit tree pruning should focus on clearing the work of clearing and cutting off the long branches of the tree shrews and the long strips at the cut-saws; the fruitless branches that affect the ventilation and light transmission of the trees should also be stripped or retracted; The ineffective branches of the middle and lower parts of the canopy should also be removed.
Mid-maturing varieties
For varieties such as Hongxing, Shouhong, Marshal, etc., which should be harvested before harvesting, it should be sprayed in August to prevent fruit drop: generally choose 20% naphthaleneacetic acid 5g plus water 30-40kg, spray wet fruit handle This month should be carried out 1-2 times. This method can not only shake the fruit, but also promote fruit coloring.
Apple trees strengthen 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 sprayed 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 sterilization 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.
Pay attention to the mites and weeding of apple trees
This year, there is a lot of rain, and it should be drained immediately after the rain. The clay orchard should pay more attention to the soil to prevent the roots from being rooted. Weeding in the orchard with many weeds, it is recommended to cut it down and press it. 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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