【摘要】 测定自然生长状态下曼地亚红豆杉春梢的生理生化指标(过氧化物酶、蛋白质、硝态氮),以了解和研究它们的变化趋势。结果表明,过氧化物酶活性、蛋白质含量和硝态氮含量的变化都呈现出先升后降的过程;在春梢生长的第4～8天都为积累上升过程,到第8天达到了最大值;8～12 d过氧化物酶活性和蛋白质含量急剧下降,硝态氮含量也在8～28 d间下降幅度较大;1 2 d或28 d之后过氧化物酶活性、蛋白质含量和硝态氮含量都维持较低的水平,但变化幅度不大。因此,在自然状态下,应及时给予土壤更多的肥料,才能为植物供给营养并为其生长提供充足的条件。更多还原

【Abstract】 The physiological and biochemical characteristics（POD,protein and NO₃ -N）of the spring shoots of Taxus media under natural condition were investigated.The results showed:the POD activity,protein content and NO₃^--N content increased firstly and then decreased,they showed an accumulation and increase process between the 4th and 8th day in the growth of spring shoot,and reached to max.in the 8th day;the POD activity and protein content decreased rapidly between the 8th and 12th day,the NO₃^--N content also decreased between the 8th and 28th day.After the 12th or 28th day;POD activity,protein content and NO₃^--N content maintained at a low level,but varied in a little range.So under the natural condition,more fertilizers must be given to the soil so as to supply enough nutrition and suitable condition for plant growing.更多还原