沙芥属蔬菜不同苗龄植株叶片营养成分含量变化规律的研究

DUMAMICS OF NUTRIENT CONTENTS OF Puionlum GAERTN. LEAVES IN DIFFERENT PLANTLE AGE

沙芥属（Puionium Gaertn.）蔬菜是以食用叶片为主的沙生蔬菜,本文通过测定其植株不同苗龄期几种营养成分的含量,掌握其变化规律,从而为初始采收期的确定提供理论依据。其结果表明：沙芥和斧翅沙芥种在8片~12片叶间维生素C、蛋白质、氨基酸和可溶性糖含量已达到较高的水平。由于此期植株已进入旺盛生长期,因此可作为人工栽培始收期。

Puionium Gaertn,a kind of sand vegetable mostly for its leaf.Several nutrient contents of leaves in different plantlet were investigated,evaluating its dynamics,providing academic for the first harvesting date.The result showed that： the contents ofvitamin C,protein,amino acidand soluble sugar of had a 8～12 leaves in P.cornutum（L.）Gaertn and P.dolabratum Maxim were high.At the same time,plant were in the growth peak period,so leaves of P.cornutum（L.）Gaertn and P.dolabratum Maxim could be harvested for the first time.