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前言杉木为我国特有树种,生长快、木材好、用途广、栽培面积广达16省(区),木材年产量约占全国木材总产量的四分之一,在国民经济建设中起着极其重要的作用。我国劳动人民在长期的生产实践过程中,熟悉了杉木生长习性,并因地制宜的采取了相应的措施,加速了杉木的生长和发育。单位面积产量已达很高的水平,如湖南通道44年生杉木,亩产材积104立方米,福建南平39年生杉木,亩产材积78立方米。解放以来,南方各省(区)在杉木营林技术上,有许多新的改进与创造;如育苗产量已普遍提高到每亩10万株以上,苗木质量也有显著提高,平均苗高约20厘米,根径约0.3厘
Foreword Cunninghamia lanceolata is endemic to China, growing fast, wood is good, wide use, cultivation area up to 16 provinces (districts), timber annual output accounts for about one-quarter of the national total timber production, plays an extremely important role in the national economy Role. During the long-term production practice, working people in our country are familiar with the habit of Chinese fir growth and have adopted corresponding measures according to local conditions to speed up the growth and development of Chinese fir. Production per unit area has reached a very high level, such as the Hunan channel 44-year-old Chinese fir, mu production volume of 104 cubic meters, Fujian Nanping 39-year-old Chinese fir, mu production volume of 78 cubic meters. Since the liberation, there have been many new improvements and innovations in the management of Chinese fir forests in various provinces (regions) in the southern part of the country. For example, seedling production has generally risen to more than 100,000 per mu and the quality of seedlings has also risen markedly. The average seedling height is about 20 cm, Root diameter of about 0.3%