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团状造林,是一种新的造林配置法。据日本研究,团状造林可大大提高林木的生长量。杨树团状造林,十年内,每亩年平均生长量可达四立方米(是我省森林每亩年平均生长量的二十几倍),是传统的杨树造林法(株行距五乘五米)每亩年均生长量一点六立方米的两倍半。花旗松团状造林,十八年内,每亩年平均生长量一点九立方米,是传统造林法(株行距一点五乘一点五米或三乘三米)的两倍左右。我省的情况也表明,桉树萌芽更新,每桩保留
Cluster afforestation, is a new afforestation configuration method. According to the Japanese study, the regiment afforestation can greatly improve the growth of trees. Poplar clump afforestation, ten years, the average annual growth of up to four cubic meters per mu (forest is the average annual growth of forest several times), is a traditional poplar reforestation (spacing of five meters and five meters ) The average annual growth rate per acre is two and a half times 1.6 cubic meters. Douglas fir afforestation, 18 years, the average annual growth of 1.9 million cubic meters per mu, is the traditional method of afforestation (line spacing 1.5 or 1.5 by three meters three times) about twice. The situation in our province also shows that the eucalyptus sprout renewal, each pile reserved