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在学习外地经验的基础上,我场于1972—1973连续两年用油松一年生苗造林一千多亩。结果表明,在相同的立地条件下,用一年生苗造林比用二年生苗者成活率高12％左右。显然,采用一年生苗造林是发展林业生产的一条新途径。
On the basis of learning field experience, I field in 1972-1973 for two consecutive years pine annual seedling afforestation more than 1000 mu. The results showed that under the same site conditions, the survival rate of one-year-old seedlings was about 12% higher than that of two-year-old seedlings. Obviously, the use of annual seedling afforestation is a new way to develop forestry production.