常見(jiàn)例句雙語(yǔ)例句The seed rain and soil seed bank of Picea asperata population of Miyaluo primitive subalpine coniferous forest in western Sichuan, China were studied.對(duì)川西米亞羅地區(qū)天然亞高山針葉林雲(yún)杉種群的種子雨和土壤種子庫(kù)進(jìn)行了研究。dictall.comBased on the data from stem analysis and growth ring measurement, regression models of stem volume with DBH and tree height of 70 years Picea asperata plantation were established.根據(jù)樹(shù)乾解析資料,建立了70年人工雲(yún)杉林的單株材積與胸逕和樹(shù)高的數(shù)學(xué)模型。The survival rate gets higher when the coat is applied to picea asperata mast.使用該材料後雲(yún)杉樹(shù)苗成活率得以大幅度提高;d.wanfangdata.com.cn 返回 Picea asperata