The year with many fruit trees is called "Great Year", and the year with few or even no results is called "Small Years." This kind of phenomenon in which the big year and the small year alternate with each other is called the "size year" (also called the result of the next year). First, the characteristics of the size of the year When fruit trees produce a large number of results, they are prone to size years due to extensive management. The general rule is a large year, a small year alternates; there is also a large year, two consecutive years, or a small year later, two major years. There are orchards of large and small size, with reduced yields and deteriorating quality. As the tree vigor weakens, the resistance is reduced, the pests and diseases are numerous, and when it is severe, the large branches and even the whole tree die. Second, the reasons for the size of the year Fruit trees consume large amounts of nutrients and moisture when they are sprouting, growing, flowering, fruiting, flower bud differentiation, and storing nutrition. In old years, due to too many flowering results, if the management of fertilizer and water does not keep up and consumes a large amount of nutrients, the flower buds formed in that year will be less, and the next year will be the young year; at the young age, the flowering results will be less, and the nutrients will be mainly used for growth. Accumulation of nutrients has promoted the formation of a large number of flower buds and will become a big year next year. Third, change the size of the measures 1. Choose suitable rootstocks and varieties: When fruit trees are grafted onto different rootstocks, the performance of the growth and results is not the same. 2. Strengthen orchard soil, fertilizer, and water management: Practice has shown that deep plowing and expansion of holes, leveling of land, cultivating weeds, increasing organic fertilizers, and paying attention to nitrogen, phosphorus, and potassium fertilizers (the ratio of nitrogen, phosphorus, and potassium is 2:1: 3) Application, timely irrigation and drainage can promote the robust growth of fruit trees and overcome the phenomenon of size and annual results. 3, a reasonable plastic pruning: pruning can reduce nutrient consumption, is conducive to air and light, reduce pest damage, promote multiple results, results in good results. For prairie trees, the number of flower buds is controlled through pruning to promote flower bud differentiation. The young tree lightly cuts the result branches, retains the flower buds, shears the vegetative shoots, and suppresses the formation of excessive flower buds. 4. Thinning, thinning, fruiting and fruit preservation: On the basis of strengthening the management of the Chinese New Year, pay attention to thinning and fruit thinning, and control the amount of results, so that “big year is not bigâ€, reduce nutrient consumption, and lay a foundation for growth and results in the coming year. basis. Small number of young flower buds, leaving more flower buds, and artificially assisted pollination, spraying boron during flowering and other measures to protect the fruit, so that "small years are not small." 5, timely control of pests and diseases: protection of fruit trees from pests and diseases, is to promote fruit trees robust growth and high production and stable production of important conditions. Therefore, it is necessary to strengthen the prediction and prediction of pests and diseases, and to adopt early methods of combining drug control and biological control to ensure the prevention and control effect. Chewable Tablets,Vitamin C Chewable Tablets,Chewable Vitamin C,Chewable Calcium Guangzhou Etechange Biological Engineering Co.,Ltd. , https://www.etechange.com