In fact, many farmers have been asking a small question, that is, what about the walnut tree? The fruit drop of walnut trees will cause considerable economic losses for walnut growers. Therefore, the following small series will talk to you about the causes and prevention measures of walnut fruit drop. 1 Analysis of the reasons for walnut fruit drop 1.1 Influenced by low temperature environment The flowering time of the female flower and the male flower of the walnut tree is obviously different. Generally, the male flower blooms in early April, and the female flower blooms in mid-April, and the rainy season in many areas is also concentrated in April, and the temperature is lowered and the pollen activity is active. Greatly reduced, pollen will become obstacles when fertilized, resulting in a large number of fruit drop in the walnut tree. 1.2 Wind has a certain impact on fruit drop Wind blowing is also one of the reasons for the large number of fruit falling in walnut trees. The wind speed and air volume are reasonable for the growth of walnut trees, but once the wind is too strong, the wind speed is too fast, it will play the opposite role. The situation is very unfavorable for the growth of walnuts. When the walnut tree encounters strong wind, the transpiration of the leaves will be greatly accelerated, which will cause a large loss of nutrients in the fruit trees, resulting in obvious fruit drop phenomenon. 1.3 Problems with cultivation techniques As the majority of fruit farmers are more and more enthusiastic about the cultivation of walnut trees, the area planted with walnuts continues to expand, but the corresponding management techniques have not kept pace with development. Many fruit farmers lack professional walnut planting experience. There are many misunderstandings in soil management and fertilization, such as a large amount of irrigation and fertilization, without timely and reasonable pruning, resulting in the upper crown of the walnut is too large, the lower part is too weak, the orchard is not sunny, so that the fruit trees grow up and down, resulting in The phenomenon of low fruit set rate is more serious at the lower end. 2 Take protective measures to reduce the occurrence of walnut fruit drop 2.1 Do a good job in scientific management In order to reduce the occurrence of walnut fruit drop, it is necessary to carry out more scientific and standardized management of fruit tree cultivation. In the process of fruit tree planting, we must pay attention to the density of planting. For orchards with severe canopy, it is necessary to grade the fruit trees and determine Whether the fruit tree is a permanent line, a permanent strain, or a temporary line or a temporary strain. For the permanent tree, it is necessary to analyze the long-term view and cultivate the canopy; for the temporary tree, it is necessary to clarify the growth period, try to make the fruit tree advance the result time, and need to remove it when it affects the permanent tree result. Secondly, it is necessary to do a good job in the control of the crown, to make the management work more detailed, to strictly control the measures of the crown, to rationally carry out watering and fertilization, not to blindly apply fertilizer, to control the height of the trunk and the thickness of the branches, and to reduce the heat in the hot summer. Cut off and eliminate the upper competition branch, promote its early results, and achieve the goal of controlling the fruit tree. 2.2 Pay attention to windbreaking Reduce the impact of wind environment on walnut trees, pay attention to windbreaking forests, weaken winds during the stormy season, slow down wind speed, reduce wind damage, and also reduce evaporation of soil moisture, maintain water and soil, weaken cold current, and increase air humidity and temperature. At the same time, combined with the structure of the forest belt, in the case of conditions, try to choose the combination of the wind tunnel and the shrubs. Of course, the selection of the tree species also requires a lot of effort, which can not affect the growth of the walnut tree. The spacing between the forest belt and the walnut tree needs to have sufficient distance. Generally, the control is about 20m. 2.3 Picking leaves Leaf picking is generally carried out in the spring. Appropriate removal of leaves can greatly reduce the transpiration of the leaves, help the leaves to lock in moisture, reduce the loss of nutrients in the plants, increase the fruit setting rate of walnuts, reduce the occurrence of fruit drop, and increase the yield of walnuts. The above is the reason for the fruit falling of walnut trees and its prevention and control technology. I hope these methods can help the walnut growers solve the problem. Auto Sealing Machine,Vacuum Sealer Machine,Podiatry Sealing Machine,Automatic Heat Sealing Machine ZHEJIANG FOMOS MEDICAL TECHNOLOGY CO.,LTD. , https://www.ifomos.com
