Going out of the apple orchard management misunderstanding after entering the autumn
In recent years, some fruit farmers have misunderstandings in the autumn management, which not only affects the yield and quality of apples in the same year, but also brings many hidden dangers to the flower bud differentiation and flowering of apple trees in the coming year. August to November is the key period for the management of apple orchard in autumn. The agricultural technology experts remind the fruit farmers not to blindly apply nitrogen fertilizer. It is necessary to timely add calcium to fruit trees, pay attention to autumn shears, control autumn shoots, and prevent pests and diseases.
Blind nitrogen fertilizer, more irrigation. In order to promote apple enlargement and strengthen the tree body, after entering August, the fruit farmers saw that the bagged fruit was not inflated, the bag was not supported, and the bag was lifted, and the nitrogen fertilizer and the multi-irrigation were reapplied. I don’t know, this caused the fruit to grow too fast, affecting The nutrient ratio of the fruit induces the occurrence of calcium deficiency; in addition, the vegetative growth of the tree is particularly strong, and the growth of the autumn shoots is large, and there are many long branches. Bagging fruit is not colored, has many diseases, and is not resistant to storage.
Solution: Strictly control nitrogen, stabilize phosphorus, increase potassium, supplement trace elements and control water.
Autumn trim is not in place. Most fruit farmers only pay attention to winter, spring and summer pruning, and do not pay attention to autumn shears. Although a small number of fruit farmers are pruning, they are not careful and meticulous, and they are obsessed with dense branches, long branches, overlapping branches and cross branches. Not in place, so poor ventilation and light transmission, is not conducive to flower bud differentiation and fruit coloration.
Solution: The focus of the autumn shears is to remove the dense and thin, remove the germinated branches, the long branches, the inside of the canopy, the slender branches, the strong and vigorous competition branches, the diseased insects, and achieve ventilation and light transmission.
Ignore the external application of fertilizer and spray fertilizer. Many fruit farmers do not pay attention to the external fertilizer, it is difficult to achieve the effect of strong trees, full buds, bright green leaves, large fruit and good coloration.
Solution: Increase the management in the middle and late period, apply foliar fertilizers containing potassium and trace elements to strengthen the tree. Regular trunks are coated with Qirui, Tianda, Haizhibao, Peptide God, Bell Amino Acid, and Blue Juice. Adhere to regular (10 to 15 days) foliar spray fertilizer. Many years of practice have proved that the application of foliar fertilizer on the ground can enhance the tree potential, improve the ability of the tree to resist drought, cold and disease, reduce the occurrence of diseases and improve the quality of apples.
Despise calcium supplementation. In recent years, bitter pox, acne spot, water heart disease, and cracked fruit disease on apples have become more and more serious, which are related to calcium deficiency.
Solution: Apples absorb calcium in two peaks in a year. One is 30 to 40 days after flowering, and the other is 30 to 40 days before harvest. Therefore, in the later stage, the fruit grower should give calcium to the apple tree 2 to 3 times, and can spray calcium and bell calcium to reduce the occurrence of calcium deficiency symptoms.
Do not pay attention to controlling the autumn shoots. Controlling the growth of autumn shoots can promote flowers.
Solution: Spraying PBO (fruit tree promoter) 250-300 times + amino acid 300-400 times in August and mid-August can improve the tree's anti-reverse effect (cold resistance, drought resistance, pest resistance, etc.).
Ignore pest control. Individual fruit farmers in the orchard management often do not care before and after, so management is not scientific.
Solution: From the beginning to the end, we should prevent and control early defoliation and brown spot disease in the first place. The fungicides and insecticides should be selected according to the condition of pests and diseases, and the effect is better.
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