What are the ways to promote the color conversion of sweet pepper?

What are the ways to promote the color conversion of sweet pepper? Please give guidance to promote the color conversion of sweet pepper in the following four ways: first, through topdressing, supplement potash and boron fertilizer, do not use too much nitrogen fertilizer. Usually, the amount of potash fertilizer is about 1.5 times that of nitrogen fertilizer. In order to promote the color change of sweet pepper, good color. Second, improve the lighting conditions to avoid lack of light. Sufficient light is one of the important measures to promote the coloring of sweet pepper. Sweet pepper coloring period must pay attention to wipe the greenhouse film, increase the transmittance of the greenhouse film. The old leaves and yellow leaves in the lower part of the plant should be removed in time to ensure good light and ventilation between the plants and promote the uniform coloring of sweet pepper. Third, enlarge the temperature difference between day and night and increase the accumulation of photosynthate. But also avoid too high and low temperature, such as more than 30 ℃ and less than 12 ℃. Fourth, oxytocin can be sprayed, but the concentration should be low. Otherwise, the high concentration of ethephon will cause plant aging. It should be sprayed according to 40% ethephon not more than 3000 times, and the concentration of fruit should not exceed 3000 times. Click to get more sweet pepper planting techniques click to get more vegetable planting techniques