Apples will have a coloring time during the fruit ripening period. The quality of the coloring directly affects the quality and also has a very large impact on the economic benefits of the fruit farmers. What is the reason for the poor coloring of apples? What are the solutions? Why not take a look. 1. The light is too poor. Many orchards are densely planted and canopy, and the scenery conditions have deteriorated. The fruits cannot be colored due to lack of light or too little light. This is a major cause of poor coloration of apples. In view of this situation, it is necessary to trim and remove the dense branches, optimize the overall structure of the tree, and achieve good light transmission. 2. Unbalanced nutrient supply This is another important cause of poor apple coloration. The fertilizer requirement of apple trees is that the ratio of nitrogen, phosphorus and potassium is 1:0.5:1. Excessive nitrogen and potassium deficiency can lead to poor coloration of apples, and magnesium deficiency can also cause apples to produce chlorosis. In this case, it is necessary to change the concept of fertilization, pay attention to the use of organic fertilizers, mainly organic fertilizers, supplemented by inorganic fertilizers, appropriately reduce the use of chemical fertilizers, pay attention to the reasonable combination of nitrogen, phosphorus, potassium and various medium and trace elements, and pay special attention Increase the use of potassium and magnesium fertilizers to meet the balanced supply of nutrient elements needed for the growth and development of fruit trees, and make them high-yield and high-quality. 3. Insufficient water. Adequate water supply is an important ecological factor that promotes apple coloring. During the apple coloring period, if there is a dry and rainless weather, you should irrigate in time to increase the humidity of the orchard to promote fruit coloring. At the same time, good orchard humidity can also adjust the temperature difference between day and night in the orchard, thereby promoting coloring. Fourth, the load is too high. Excessive load is not only easy to cause large and small years, but also the quality of the fruit will decline. Because the fruits are crowded with each other, the light is blocked, and the coloring will be incomplete. The method that is easier to master is the method of keeping the fruit at intervals, that is, for large fruits, leave 2 apples at a distance of 20-25 cm, and for small fruits, leave 1 apple at a distance of 15-20 cm. Generally, the output per mu of land should be controlled at 3000~4000 kg. 5. If Summer and Autumn pruning is not in time, the task of pruning in summer and autumn is to cut off the upright long branches, long branches, over-dense branches, cross branches and overlapping branches, etc., to improve scenery conditions, promote photosynthesis, balance tree nutrition, and reduce nutrients Consumption. If you do not cut or cut too late, the above effect will not be achieved and the coloring will be affected. 6. Color-enhancing measures such as leaf picking, fruit transfer, and laying of reflective film are not well used. After the bag is taken off, the fruit-sticking leaves and shading leaves should be removed in time to make the fruit visible. When the color of the sun surface of the fruit is better, the fruit is transferred in time, and the fruit is matted to make the color of the fruit surface even and complete. Laying the reflective film can make the inner chamber of the denser disk and the fruit on the lower skirt branch complete, especially to promote the more obvious coloration of the fruit depression. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Safety Green Sweater,Safety Orange Sweater,Reflective Safety Sweaters,High Vis Cardigan Ningbo Staneex Imp. & Exp. Co., Ltd. , https://www.staneex.com