论文部分内容阅读
常年平均气温15.9℃,平均相对湿度80%,平均降雨量1104.1毫米,常年无霜期241.1天,1月平均气温2.7℃,7月平均气温28.7℃.(二)种苗来源1978年从安徽省宁国地区调进种子,由本县青山苗圃培育,当年生苗高80厘米左右,地径1.2厘米.(三)造林方法撩壕开沟,沟深60厘米,宽70厘米,株行距1.5×4米,行内混交杉木,每亩111株.营造面积93亩.(四)造林时间1979年春,随起随栽.(五)样地调查1983年冬对该片林分按上、中、下部位分别调查,每隔10行抽取二行检尺胸径及树高,重复6次,对其中一株优势木和平均木
The annual average temperature of 15.9 ℃, average relative humidity of 80%, the average rainfall of 1104.1 mm, perennial frost-free period of 241.1 days, January average temperature of 2.7 ℃, July average temperature of 28.7 ℃. (B) seedling sources in 1978 from Anhui Province Ningguo region Seeds, cultivated by the county Qingshan nursery nursery, when the seedling height of about 80 cm, diameter 1.2 cm. (Three) afforestation method trench trenching ditch, ditch depth of 60 cm, width 70 cm, spacing of 1.5 × 4 m, within the line Mixed with Chinese fir, with a total area of 93 mu. (4) Afforestation time Spring of 1979, with the planted. (5) Site Survey In the winter of 1983, the survey was conducted on the upper, middle and lower parts of the forest, Every 10 rows were taken two rows of DBH and tree height, repeated 6 times, one of the dominant wood and average wood