【摘要】 目的:以一年生和二年生白术为研究对象,研究其全生育期比叶重和地下根茎的变化规律,并对二者相关性进行分析,为白术快速测产提供实验依据。方法:采用定期挖掘法采挖一年生和二年生白术(根据地下根茎形态分为鸡腿型/蛙型、二叉型、武字型),测定比叶重和根茎干重,计算折干率和相关性。结果:一年生白术生育期比叶重呈N字型,二年生白术3种根茎类型的生育期比叶重呈直线增长,均在十月下旬达到最大值;所有根茎干重均呈现直线增长,并且根茎折干率随时间增加而增加。结论:一年生白术生育期比叶重根茎增重相关性较差,二年生各根茎类型白术呈现较强的正相关性。更多还原

【Abstract】 Objective: To study the change rules of specific leaf weight,dry weight of rhizoma and the drying rate of annual and biennial Atractylodes macrocephala.Methods: We measured the specific leaf weight and dry weight of rhizoma,and accounted the drying rate and correlation by dugging the annual and biennial plants each 15 days.There were 3 rhizoma types of biennial Atractylodes macrocephala with Drumstick/Frog type,Er-cha type and Wu-zi type.Results:It showed the curve of specific leaf weight of annual plant was "N" style,which of biennial plant was linear.The dry weight and the drying rate of all rhizoma types increased point-blank during the whole growth period.Conclusion: The correlation between specific leaf weight and dry weight of rhizoma is obvious in biennial Atractylodes macrocephala but is contrary in annual Atractylodes macrocephala.更多还原