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云南省地形复杂,气候垂直变化显著,干湿季节分明,每年气温于1月处于最低温后,1～3月份气温迅速开始上升,有利于西瓜播种、出苗及生长发育,4～5月是我省干旱高温时期,有利于西瓜座果、成熟,使西瓜在4～5月可以大量上市,此时,正值全国水果市场淡季,因而本省西瓜销路广、价格优。
Yunnan Province, the terrain is complicated, the vertical climate changes significantly, the wet and dry seasons, the annual temperature in January at the lowest temperature, the temperature rose rapidly from January to March, is conducive to watermelon sowing, emergence and growth, April to May is my Drought during the high temperature, is conducive to watermelon fruit, mature, so that watermelon in April and May can be a large number of listed at this time, the national fruit market is off-season, so the province wide watermelon sales, excellent price.