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湖南西南地区大部分为丘陵山区，据调查，仅城步、新宁两县海拔７００m以上可供高山栽培的面积就在２万hm２以上。这些地区腐殖质长年积累，土层深厚，土地十分肥沃，且森林覆盖率高，夏秋气候温暖湿润，雨量充沛，昼夜温差较大，病虫害不易发生，有利于优质南瓜夏秋迟熟栽培，
Most of the southwestern Hunan Province is hilly and mountainous areas. According to the survey, only the area with an elevation of 700m or above at the foot of the city and Xinning counties is more than 20,000 hm2. Humus has been accumulated in these areas for many years, with deep soil layers, very fertile land, high forest coverage, warm and humid summer and autumn climate, abundant rainfall, large temperature difference between day and night, easy occurrence of pests and diseases,