silvicultural technique 基本例句 造林技术 Provenances selection and afforestation technique of Fraxinus mandshurica Rupr.水曲柳优良种源选择及造林技术。 The funnel shaped catchment afforestation is a new forestry technique in semiarid loess hilly area.漏斗式集流造林技术是黄土丘陵半干旱区旱作林业的一个创新。