What is the relationship between the use of plant growth regulators and climatic conditions?

At present, most of the methods used are foliar spraying, and plants can absorb liquid medicine through stomata. When the temperature is too low, the foliar absorption is slow; When the temperature is too high, the water in the liquid medicine is easy to evaporate, which is easy to cause excessive unabsorbed drugs to precipitate on the leaf surface, which is harmful to the tissue. When applied in arid climate, the application concentration should be reduced; On the contrary, when applied in rainy season, the concentration should be increased appropriately. The application time should be around 10 and 16. It is not suitable to apply pesticides in windy weather and when it is about to rain. If it rains within 4 hours after application, half or all of the liquid medicine should be supplemented as appropriate. If you water the soil, don't water it too much, so as to avoid the loss of chemicals at the bottom of the basin and affect the efficacy.