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威宁是贵州省西部的高寒山区,平均海拔在2250公尺以上,是云贵高原残留的典型地貌,除极小部分海拔在2000公尺以下的高山河谷地区可以出产水稻外,大部分地区为缓丘,年平均气温10.3度,元月平均气温1.7度,七月平均气温17.7度,无霜期只有160天,气候特点是冬无严寒夏不热,昼夜温差大,气候变化剧烈,年雨量1000毫米左右,多集中在六、七、八三个月,秋季阴雨绵绵,冬春干旱严重,年蒸发量大于降雨量,晚霜频繁,全县有耕地面积118万亩,土壤多为酸性黄地,土质粘重,山坡瘦薄地占70％以上,施肥水平低,主产包谷、洋芋、荞子、燕麦为一年一熟制地区。复种指数很低。小
Weining is an alpine mountainous region in the west of Guizhou Province with an average elevation of 2250 meters above sea level. It is a typical landform of the Yunnan-Guizhou Plateau. Except for a very small part of the alpine valley where the elevation is below 2000 meters, rice is produced in most areas Mound, the annual average temperature of 10.3 degrees, the monthly average temperature of 1.7 degrees, July average temperature of 17.7 degrees, frost-free period of only 160 days, the climate is characterized by cold winter is not hot, large temperature difference between day and night, severe climate change, annual rainfall of about 1000 mm , Mostly concentrated in six, seven, eight or three months, the autumn rainy, serious winter and spring drought, the annual evaporation is greater than the rainfall, frequent night cream, the county has 118 acres of arable land, mostly acidic yellow soil, soil sticky Heavy, thin slope accounted for more than 70%, low level of fertilization, the main package Valley, potato, buckwheat, oats for a year cooked area. Multiple crop index is low. small