不同形态氮素配比对“赤霞珠”幼苗叶片光合色素与碳水化合物含量的影响

Effect of Different Nitrogen Form on Photosynthetic Pigment and Carbohydrate Content in Vitis viniferacv.‘Cabernet Sauvignon'Leaves

以欧亚种酿酒葡萄"赤霞珠"(Vitis vinifera L.cv.‘Cabernet Sauvignon’)扦插苗为试材,对葡萄幼苗分别按100∶0(T1)、75∶25(T2)、50∶50(T3)、25∶75(T4)及0∶100(T5)5种比例施用NO3--N与NH4+-N氮肥,以不施肥作为对照(CK),研究不同形态氮素配比对葡萄叶片光合色素和碳水化合物含量的影响。结果表明:混合氮素处理T2、T3和T4幼苗在各时期叶片中光合色素与碳水化合物含量均高于CK和全铵处理T5(硝铵比0∶100);同时,处理T2各项指标均高于其它处理组,且处理T2与CK具有显著差异(P<0.05);全硝态氮处理T1(硝铵比100∶0)各项指标与处理T3相近,且皆低于处理T2而高于处理T4,含硝态氮处理间各指标总体上无显著性差异。

‘Cabernet Sauvignon’（Vitis vinifera L.）cutting-seedlings were used,to evaluated the effect of different nitrogen forms on photosynthetic pigment and carbohydrate content.Five treatments were conducted according to NO3--N/NH4＋-N ratios,including 100∶0（T1）,75∶25（T2）,50∶50（T3）,25∶75（T4）,0∶100（T5）with total nitrogen being equal amount,and no fertilizer treatment was used as control（CK）.The results showed that the content of photosynthetic pigment and carbohydrate were higher in three mixed nitrogen treatment（T2,T3 and T4）in each period of vine grown compared with the treatment T5 and CK.Meanwhile,every indicator in treatment T2 were the highest among all treatment group and were significantly different with CK（P〈0.05）.In addition,every indicator in the nitrate treatment T1 were similar to T3,lower than treatment T2 but higher than T4.There were no obvious difference among these treatments containing NO3--N（T1,T2,T3 and T4）.