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采用割面负荷率40％,割沟深0.3cm、割沟宽0.3—0.5cm,间隔期1天的工艺,在广东省韶关林场对25—30年生马尾松人工林进行了两年采脂试验,经1982年割89次,1983年割101次,1984年从中选择31株进行树干解析,结果表明:人工林25—30年的松树适于采脂。生长在南坡的松树,其产脂力为北坡的1.45倍,生长在山脚和山腰的松树,其产脂力分别为山顶的1.61倍和1.37倍。采用两个宽度为树干周长的20％的割面,两割面间留宽约10cm的纵向营养带,其产脂量和产脂力比目前生产上采用一个宽割面的提高31％和62％。采脂对树木的生长有一定的影响,采脂树生长量低于未采脂树的生长量,产脂多的树生长量又低于产脂少的树。但从经济效益来看采脂是合算的。
A 25-year-old Pinus massoniana plantation was cut in Shaoguan Forest Farm of Guangdong Province for two years using the technology of cutting load rate of 40%, cutting groove depth of 0.3cm, cutting groove width of 0.3-0.5cm and spacing of one day. , 89 times in 1982, 101 times in 1983, and 31 trees in 1984. The results showed that the pine plantation 25-30 years old in plantation was suitable for the lipid-picking. Pine trees growing on the southern slope produced 1.45 times of fat on the north slope, and pine trees growing on the foot of mountain and hillside had the highest lipid yield of 1.61 times and 1.37 times higher than the top of the hill. Two longitudinal cuttings with a width of 20% of the circumference of the trunk and a width of about 10 cm between the two cuttings are used to increase the fat yield and the fat-producing capacity by 31% compared with the current production using a wide cut surface 62%. Lipid has a certain impact on the growth of the trees, the growth of the tree is less than the growth of the tree without resin, resinous tree growth is lower than the tree with less fat production. But from the economic point of view liposuction is cost-effective.