At present, the apple tree enters the peak of growth. At this time, it is in a hot and rainy season. When there is too much water in the soil, the roots of the fruit trees will have poor ventilation and will inhibit the growth and absorption of the roots. The management focus of the current apple orchard is to strengthen the nutrition supply; to trim excess shoots and to control the growth of autumn shoots; to ensure the normal growth of the leaves, to promote the rapid expansion of the fruit; to promote full flower buds, prevent fruiting of the medium and ripe varieties; to strengthen the control of pests and diseases, Ensure a good harvest this year. The current apple orchard management technical measures are introduced as follows:
Strengthen nutrient supply
In particular, when the tree is characterized by leaf unevenness, yellow leaves, improper leaf color, falling yellow leaves, and foliar leaves, nutrient supply of fruit trees should be immediately strengthened. With quick-supplementation of boron-molybdenum-magnesium-zinc-calcium amino acid nutritional liquid fertilizer 300 times or potassium fulvic acid 600 times, spray once every 10-15 days.
In addition, at this time, when the fruits are inflated, the trees bearing more fruits must be topdressed to promote rapid fruit enlargement. Phosphorus and Potassium fertilizers should be used as the main results. Each age-resulting tree should be treated with high-potassium and low-nitrogen type fruit trees for 1.5-2 kilograms of dedicated fertilization or 5-6 for potassium fulvic acid.
Summer and autumn trim
In the summer and autumn, the pruning of fruit trees should focus on the work of clearing and cutting out the leggy branches within the tree branches and the legions at the slashing mouths; the fruitless branches that affect the tree's ventilation and light transmission should also be removed or retracted; The invalid branches in the lower part of the canopy should also be removed.
Pre-harvest fruit drop in medium-maturing varieties
For varieties such as Hongxing, Shouhong, and Marshal, which are easy to pick and drop, they should be sprayed to prevent fruit drop in August: Generally, the content of naphthaleneacetic acid is 20%, 5 grams of water and 30-40 kg of water are added. The month should be carried out 1-2 times. This method can not only shake the wind, but also promote fruit coloring.
Strengthen pest control
The most important thing now is the prevention and treatment of early defoliation. Some days ago due to rainy days, in this case, fast-acting pesticides should be used, such as 9281 preparations for spraying, to prevent bacterial infections quickly, after spraying quick-acting pesticides, as long as the agent can dry on the leaves to absorb , can play a very good bactericidal effect. The pharmacological effect of this type of drug is about 7 days. After sunny days, it should be sprayed with long-acting drugs, such as sterilizing bacteria, bacteria extinguishing bacteria, polyoxins and other pollution-free pesticides.
Pay attention to flood control and weeding
This year, there is a lot of rain, and it should be drained immediately after the rain. The clay orchards should pay more attention to the planning of the soil so as to prevent the roots from being damaged. Weeding more orchards in time, it is recommended to cut down the green manure. Chemical herbicides can also be used for weed control, with 30 times glyphosate (eliminate perennial weeds) plus 1,000 times the king to help kill or 300 times the detergent, or use 300 grams of a trace of no trace to help kill the king 1000 times, Speed ​​kill weeding.
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