When the apple tree is large, the fruit trees have many results. Although the yield is very large, the quality is very low. If it is not managed and allowed to grow, it will weaken the apple tree's tree potential, and the disease resistance will be reduced. In severe cases, the fruit trees will be advanced. death. When apples are small, the results of fruit trees are small, and the yield and quality are not high, which affects the income of fruit farmers. Therefore, it is very important to avoid the occurrence of large and small years when the apple trees are flowering. Professor Lei Zongzhong from Yangling Vocational and Technical College said that when the apples are thinned and thinned, the following points should be grasped. First, strict flowering, fruit thinning, fruit setting standards
When flowering, the inflorescence separation period is to eliminate the dense and poor quality inflorescence; to remove the long long branches and the permanent main branches to extend the inflorescences 50 cm away; thoroughly remove the inflorescence buds and retain the leaves on the moss; In the flowering period, the center flower and the side flower are selected, and the rest of the flowers are removed.
When fruit thinning, priority should be given to retaining the center fruit. In the case of insufficient fruit in the center, you can choose the larger side fruit that is thicker and flattened. Resolutely put an end to the double fruit and three fruits. When fruit thinning, try to remove the fruit and reduce the cause and effect when collecting. Thoroughly remove the fruit, deformed fruit, diseased fruit and wounded fruit. Second, scientifically determine the amount of fruit left
According to the variety, fruit setting, tree potential, site conditions, fertilizer and water conditions, the amount of fruit retained in the mu is determined. On this basis, the amount of fruit retained by each plant and each main branch was determined. First, it is determined according to the size of the fruit. Large fruit varieties (such as Fuji, Qin Guan, etc.) 20~25 cm to leave a fruit; medium and small fruit varieties (such as 嘎啦, åƒç§‹, etc.) 15~20 cm to leave a fruit, the amount of fruit can be slightly more than 10~ 20%. The second is determined according to the situation of the tree. If the tree is strong, it will stay more. If the tree is weak, it will stay less. Third, matters needing attention
1. Orchards with a large amount of flowers must strictly control the amount of flowers left to maintain a reasonable load.
2, before the fruit is thinned, the tools should be carefully disinfected to avoid the spread of germs.
3, to strengthen the management of flowering period, combined with pest control, spray the appropriate amount of urea, potassium dihydrogen phosphate, humic acid, active calcium and other foliar fertilizer spray, supplement nutrition, improve fruit set and fruit quality .
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