How do fruit trees use chitin series fungicides?

How do fruit trees use chitin series fungicides? Please introduce that chitin fungicide is a new type of fungicide. It not only has the effect of sterilization and disease prevention, but also can promote the growth and development of fruit trees, improve the yield and quality of fruit trees, is better for improving the environment, and is worth popularizing in the current pollution-free cultivation of fruit trees. Three kinds of chitin fungicides are introduced. 1. Shi Zhuang: also known as Green phytoprotectin 2, it can induce plant gene regulation, activate plants, enhance the immune function of fruit trees, improve disease resistance, and form a film on the plant surface to protect against bacterial infection and prevent the occurrence of fruit tree diseases. The drug also has the characteristics of promoting the absorption of fertilizer, resisting adverse environment, accelerating the growth and development of fruit trees, and plays an obvious role in promoting reproductive growth and improving fruit quality of fruit trees. This medicine is suitable for all kinds of fruit trees. From flowering to fruit formation, 2% water-strengthening agent is diluted into 600-800 times liquid, sprayed every 5-7 days, 2-3 times in a row. 2. Glycolide: it can induce resistance, prevent the occurrence of disease and resist the invasion of bacteria, promote growth, improve quality and so on. It is mainly suitable for all kinds of berry fruit trees, with a large increase in yield and significant improvement in quality, which can increase the fruit setting rate by 3-4.5%, promote neat fruit shape, smooth fruit surface, bright color and maturity, and is suitable for strawberries, grapes and other fruits. When applied in the fruit setting period, it can protect fruit trees from pathogen infection, reduce disease and improve stress resistance to adverse environmental conditions. At the beginning of the fruiting period (not too late), spray 1.5% Poly Candy Leshi 600 times continuously for 2-4 times, once every 6-7 days. Like Shizhuang, this agent should not be mixed with alkaline pesticides and should be stored in a cool and dry place. 3. Heixing 21: also known as Heixingling, it can induce resistance, inhibit pathogen infection, increase biological yield, improve quality and so on. It is mainly used to control scab in fruit trees, especially in pear trees. Before or at the initial stage of the disease, 400-600 times of 2% Heixing 21 aqueous agent was sprayed every 7 days for 2-3 times. If it is washed by rain 4-6 hours after spraying, it should be sprayed once. The medicine should be kept in a cool, dry place. Click to get more fungicide use technology click to get more pesticide use technology