广济县是个丘陵地区,1964、1965年,全县有200多个生产大队培育了杉苗218亩(其中一年生苗119亩),生长比较平衡。据1965年10月初调查,平均亩产10万多株,有的达12—13万株,平均苗木高度、根径,一年生的为25厘米、0.4厘米,二年生的为50厘米、0.88—1厘米。据典型调查当地群众培育杉苗的经验,主要有以下几点: Guangji County is a hilly region, 1964 and 1965, the county has more than 200 production brigade cultivated fir seedlings 218 acres (of which 119 hectares a year), growth is more balanced. According to the survey conducted in early October 1965, the average yield per mu was more than 100,000 and some reached 130,000 to 130,000. The average seedling height and root diameter were 25 centimeters, 0.4 centimeters, annuals of 50 centimeters and 0.88-1 centimeters . According to a typical survey of local people fir seedlings training experience, mainly in the following points: