After ensuring that the light is adequate on the haystacks, cover as soon as possible to increase the light time. It is also possible to increase ventilation and transparence in the shed and promote fruit coloring by timely removal of excess branches, old leaves, diseased leaves, residual leaves, and hanging reflective screens on the back wall. Unreasonable application of balanced fertilization fertilizers will seriously affect the coloring of fruits. For example, too much nitrogen will make the plants grow too strong. If there is insufficient water, green shoulders will occur. Nitrogen deficiency will cause yellowing of fruit shoulders; The fruit shoulders appear yellow-green, and the vascular bundles of the fruit and heart are lignified; in the absence of boron, the fruit shoulder remains green with necrotic spots. Nitrogen, phosphorus and potassium fertilizers should be added in time, and 1 kg of borax should be used to supplement boron fertilizer. In addition, the fruit of each ear should be top-dressed in an inflated period, and full-nutrition water-soluble compound fertilizer (15:15:30 or 20:10:30) can be used for flushing, and 5 to 7.5 kg of nutrients for mu can be used to avoid nutrient supply. Imbalance caused the fruit to be poorly colored. Small water pouring soil should not be too dry, to see dry see wet is appropriate. In sunny weather at this stage, depending on soil moisture, water can be poured every 10 days or so. Anesthesia Medical Co., Ltd. , https://www.medicaldiverse.com