不同肥料对铁皮石斛生长、抗氧化酶活性及多糖积累的影响

Effect of Fertilizers on Growth,Antioxidant Activity and Polysaccharide Accumulation of Dendrobium Officinale

为筛选铁皮石斛理想的肥料,以1年生铁皮石斛分蘖苗为材料,比较不同肥料对铁皮石斛生长(根系活力、叶绿素含量)、抗氧化酶活性及多糖含量的影响。结果表明:与对照相比,施肥显著促进铁皮石斛的生长:提高根系活力、叶片的叶绿素含量和茎的多糖含量,植物抗氧化酶活增强;其中栀子渣∶山茶粕=3∶1混肥促进效果最显著,碘肥次之。可见,栀子渣/山茶粕混合肥是铁皮石斛理想的生物肥料,显著优于化肥。

To select ideal fertilizers for Dendrobiumofficinale,the seedlings of annual Dendrobiumofficinale were used to test the effect of fertilizers on the growth （root activity and chlorophyll content）,antioxidant enzyme activity and polysaccharide content of Dendrobium officinale.According to the results,fertilization significantly promotes growth of Dendrobium officinale.The root activity,chlorophyll content of leaves and polysaccharide content of stems improve,and antioxidant enzyme activity strengthens.Wherein,the mixed fertilizer （Gardenia residue∶Camellia meal=3∶1 ）shows the most significant promotion effect,followed by iodine fertilizer. Therefore,the mixed fertilizer of Gardenia residue and Camellia meal is an ideal bio-fertilizer for Dendrobium officinale,and it is significantly superior to chemical fertilizer.