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本文以第二次杉木全分布区试验为主,结合第一次试验及中试,根据试验林不同生长阶段的生长、发育及适应性等进行分析。研究表明:种源间存在极显著的差异,其差募是稳定性的遗传差异。两次综合评定所选的前四名优良种源相吻合。14年生(连苗期)平均材积实际增益变幅为40.7—87.8%,平均遗传增益变幅为18.9—35.5%。从1986年以来在全省推广应用,到1993年共调进良种18.7万市斤。造林约205万亩。各类推广示范林生长量增益明显。
In this paper, the second experiment on the distribution of Chinese fir is the most important one. Based on the first experiment and the pilot plant experiment, the growth, development and adaptability of the test plantation in different growth stages were analyzed. Studies have shown that there is a very significant difference between provenances, and the difference is the genetic difference of stability. Two comprehensive assessment of the selected four good provenance match. The average gain of 14-year-old (even with seedling stage) amplitude of the average gain of 40.7-87.8%, the average genetic gain amplitude of 18.9-35.5%. Since 1986, it has been popularized and applied in the whole province. By 1993, a total of 187,000 kilograms of fine seeds were transferred. Afforestation about 205 mu. All kinds of promotion model forest growth gain obvious.