安徽省凤阳县石门山林场于54年2月20日,在牛蓬山小丘陵地带东南坡,以明穴栽植二年生马尾松70亩(双株栽),计25.315株,当年成活率达90%。为促使林木早日成材,65年抚育二次(锄草松土),56年抚育一次,当年成活率达85%,于57年,3月5日至12日进行摘芽试验,操作经过如下: Shimen Forest Farm in Fengyang County, Anhui Province On February 20, 54, on the southeast slope of Niu Peng mountain small hills and hills, 70-year-old perennial massoniana planted 70 mu %. In order to promote the early success of trees, 65 years of tending two times (weeding loosening), 56 years of recuperation, the year survival rate of 85%, in 57 years, March 5 to 12 for sprouting test operation is as follows: