Falling and falling fruit is a normal physiological phenomenon of grape self-regulation, but if it is too serious, it will cause serious economic losses. In order to obtain good yields and benefits, flower preservation and fruit protection are essential technologies for viticulture. The common causes of falling flowers are as follows: The first is the variety characteristics. The second is unaccustomed or abnormal weather conditions. The third is unacceptable agronomic measures. For the above reasons, the following measures can be taken to increase the fruit set rate of grapes. 1. Breed good varieties with high fruit setting rate. 2, a reasonable fertilization. No nitrogen fertilization and basal fertilization before flowering. Grapes like fertilizer and water, require more application of organic fertilizer, increase tree vigor, but grapes are very sensitive to nitrogen, once too much nitrogen, especially after a large number of nitrogen after flowering, easily lead to shoots prosperous, resulting in falling flowers, so do not apply before flowering Nitrogen fertilization, after the fruit is settled and after the harvest in autumn, apply nitrogen fertilizer. Fertilizer should be fertilized before germination in spring. 3. It is very important to improve the fruit setting rate by ensuring that tree vigor is strong and healthy, improving the nutrient conditions of the tree, and adjusting the contradiction between vegetative growth and results. 4, remove excessive spikes, timely picking. Timely brushing, timely topping, reducing the consumption of nutrients, and promoting the development of flower spikes to ensure flowering, pollination, fertilization required. Timely inflorescences are arranged to eliminate redundant inflorescences, and at the same time, the inflorescences are shaped so that the remaining inflorescences grow well. 5, flowering ring cut. In the early stages of flowering, it is carried out between the first 3 cm or the first internode, and the excision is 2-3 mm wide, reaching deep into the wood. It is then wrapped with a plastic film. 6, spray boron fertilizer. Half a month before flowering, 0.3% borax was sprayed on the leaves to promote pollen tube elongation and pollen germination, which was conducive to pollination and fertilization, and improved the fruit setting rate. Spray evenly and carefully to prevent boron poisoning. Fresh Garlic,Natural Garlic,Premium Garlic,Organic Garlic Yirun Agricultural Cooperative , https://www.yiruncn.com