一、调查地区自然条件和油茶生产情况 云台山位于我省的北部,海拔625米,约当东径119°15′,北纬31°36′左右。土壤是以花岗岩、片麻岩为母岩发育而成的黄棕壤,酸性。气候属暖温带地区,具海洋性气候的特征。 一般年平均气温13.2～14.8℃。极端最高气温35.3～38.5℃,多出现在当年的7月上中旬。极端最低气温-8.5～-13.3℃,多出现在当年的12月底到翌年的2月底。年降雨量在505.3～1069.3毫米之间,而且大部份降雨量均集中在7、8、9三个月。相对湿度在68～73％左右。 苏北云台山是我省发展油茶最北地区。1979年10月11～13日,我们对南云台 First, the survey of natural conditions and the production of Camellia Yuntaishan is located in the northern part of our province, 625 meters above sea level, when the east longitude 119 ° 15 ’, latitude 31 ° 36’ or so. Soil is a yellow-brown soil that is developed from granite and gneiss as parent rocks and is acidic. Climate is warm temperate regions, with the characteristics of maritime climate. The average annual average temperature of 13.2 ~ 14.8 ℃. Extreme maximum temperature of 35.3 ~ 38.5 ℃, mostly in mid-July that year. The extreme minimum temperature of -8.5 ~ -13.3 ℃, mostly in the year end of December to the end of February the following year. Annual rainfall between 505.3 ~ 1069.3 mm, and most of the rainfall concentrated in 7,8,9 three months. Relative humidity of about 68 ~ 73%. Yuntaishan in northern Jiangsu Province is the development of the most northern areas of Camellia. October 11 ~ 13, 1979, we are on the South Yuntai