释义 |
Korean pine短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 海松,红松 From58 year- old to68 year- old of Korean pine plantation, soil organic matter and hydrolysable N, rapidly available K decreased, but available P increased. 从58年生到68年生红松人工林林地土壤有机质、水解氮、速效钾含量下降,而土壤有效磷含量升高。 cnki The undergrowth vegetation biomass in Korean pine plantations declined over years and was less than that of the mixed forest of Korean pine and secondary natural forest at all age stages. 林下植被生物量随林龄增长而降低,所有年龄阶段红松人工林林下植被生物量都低于红松混交林和天然次生林。 cnki |