【摘要】 用数理统计方法，对桑园的经济寿命进行量化，以桑园年产叶量和年均产叶量为指标，建立了数学模型，为合理利用桑园资源提供了理论依据。更多还原

【Abstract】 Using the method of mathematical statistics,economic life span of mulberry orchards was quantitatively studied.Mathematical models were established taking yearly leaf production and annual average leaf production as the indices.This study provided the theoretical basis for reasonable utilization of mulberry orchard resources.更多还原