More Xia melon, often due to improper cultivation caused by "splitting fruit", especially in July to August, after prolonged rain, easy to produce cracks, not only affect the appearance of fruit, but also affect the quality of fruit and yield, is the majority of growers One of the problems with headaches. The author combines some data and experience to analyze and discuss this issue.

First, the cause of cracking: (1) high temperature effects. From July to August, the fruit growing on the surface of Xiyang melon, Yangyang, caused long-term sunshine and caused sunburn, resulting in physiological and droughty fruit and fruit cracking. (2) Uneven water supply. During the dry season, the water and transpiration of plants and soil increased, and the peel shrank, but the pulp grew faster and caused fruit cracking. Especially in the long-term showers or long-term rainy weather, the fruit absorbs a large amount of water through the roots and rapidly expands. The peel and flesh develop unevenly, and the peel does not resist the stress of the pulp inflated by the pulp tissue. (3) lack of nutrients. Especially the lack of potassium, the thin skin of fruit can easily cause cracking. (4) Variety characteristics. Thin, crisp varieties often break fruit. Thicker varieties of peel have fewer cracks. In general, the top of the fruit is thicker than that of the fruit stem and the top is easy to crack. (5) Cracking of other plants, such as tomatoes and eggplants, is also related to the above reasons.

Second, prevention and control measures: (1) selection of anti-cracking species, in the result period to avoid the rainy and dry seasons, reduce the occurrence of cracking. (2) Increase the use of decomposed organic fertilizer or bio-organic fertilizer to increase the water retention and water permeability of the soil and make the soil water supply uniform. (3) Timely irrigation in high temperature season, reduce surface temperature and reduce water evaporation; rainy weather drainage in time. (4) Spray foliar fertilizers: such as humic liquid fertilizer and liquid fertilizer, or "guagossa fruit 2116." According to the development of western melon, increase the dosage. To achieve the purpose of thickening the melon, enhance the toughness and fruit weight, reduce cracking. (5) Timely prevention of pests and diseases.

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