Cotton planting technology: cotton flower boll period how to spray potassium fertilizer?

How to spray potash fertilizer in cotton flower and boll stage? Please introduce the method that when cotton enters the later stage of flower and boll, the ability of root system to absorb nutrients is weakening day by day, while the shoot buds and bolls continue to grow and develop. Potash fertilizer should be sprayed in time in the cotton field that is short of fertilizer or where there are many bolls in the middle and lower parts and malnourished in the upper parts. Potassium sulfate is the most suitable for spraying potash fertilizer, such as Russian-made potassium sulfate, which contains 52% potassium oxide. Spray 30 kg of 2% potassium sulfate solution per mu for 3 times in a row. When spraying fertilizer, both the positive and negative sides of cotton leaves should be wet, and the upper half leaves of cotton plant should be sprayed as the main object. Generally spraying foliar fertilizer requires that the wetting time of leaves can be maintained at 0.5: 1 hour, preferably in the evening of windless or cloudy days. Click to get more cotton planting technology click to get more food crop planting technology