Cause of fruit drop 1. Abuse of hormones. Due to the use of "Daguoling" on kiwifruit in some places, the cells divide too fast, causing the core to crack, harden and brown, the pulp is loose, and the fruit has poor disease resistance. 2. Serious "overload". Since kiwifruit varieties such as Huayou, Hongyang, and Zaohuangjin have dense buds, frost-tolerant, and high budding rate, if you don’t pay attention to wiping buds, pinching and thinning flowers and fruits, you will consume too much nutrients for no reason. Once it enters the reproductive growth period, the tree The potential will gradually weaken, and the nutrients necessary for fruit growth cannot be guaranteed. It will inevitably cause flower and fruit drop, and even premature aging and death. 3. The tree is prosperous. Due to prosperous growth, a large amount of nutrients are consumed by the shoots, and the fruit setting is not enough to make the outer large fruits of the fruit tree fall off, which will also induce canker disease in the coming year. 4. Ignore prevention. Anti-insect sterilization and boron spraying and calcium supplementation before and after flowering are very important. If you do not prevent and supplement nutrients in advance, germs will take advantage of the wounds where the petals fall. 5. Single nutrition. At present, fruit growers manage orchards to generally have the unhealthy phenomenon of "heavy yield, light quality. Inorganic, light organic. Heavy, light quantity. Heavy underground, light above ground", resulting in the unscientific ratio of the most important elements of crops. , Imbalance, affects the balanced absorption and utilization of nutrients by plants, and is easy to induce nutrient deficiency diseases and cause fruit drop. 6. The bagging is too early. Due to the excessive weight of the fruit, the ratio of leaf to fruit is seriously imbalanced, and the fruit sunburn is severe. The bagging time of fruit growers is generally advanced. It is recommended to cover the bag to avoid high-temperature weather. The bagging is best after coloring. It is also possible to appropriately increase the thickness of the leaf curtain layer and cancel the bagging. Prevention method 1. Thoroughly clear the garden and prevent and control from the source. 2. Improve cultivation measures, rational fertilization, efficient pruning, ventilation and light transmission in the garden, promoting healthy growth and improving tree resistance. 3. Scrape the bark, especially the old bark on the lower part. If there are cracks, the worms are hidden inside. After scraping, they will be burnt to eliminate the larvae. 4. Manually hunt and kill the eggs in Sokcho on the main vine to destroy the egg masses. When the damage is concentrated, it can be killed manually. 5. Use pollution-free pesticides for prevention and control: use pollution-free pesticides that meet the requirements for pollution-free and green food production. 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 Yancheng Rongtai Labware Co.,Ltd , https://www.rongtailab.com