杉木是我省豫南地区的主要造林树种之一,生长迅速、材质好,很受群众欢迎,现已营造人工林四十余万亩。由于这里已是杉木自然分布的北界,所以其生长特点,经营管理技术与中心产区有很大不同。为了解决生产中迫切需要解决的抚育间伐技术问题,提高我省杉木林的经营水平,张培从、赵体 Cunninghamia lanceolata is one of the main afforestation species in the south of Henan Province. With rapid growth and good material, it is very popular with the masses. Now it has built more than 40 million mu of plantation. Because here is the natural distribution of the northern boundary of Chinese fir, so its growth characteristics, management techniques and central production areas are very different. In order to solve the urgent need to solve the problem of tending thinning technology in production and improve the management level of Cunninghamia lanceolata in our province,