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当前位置: 首页 > 文章 > 不同硝铵比对霞多丽葡萄幼苗生长和氮素营养的影响 植物营养与肥料学报 2010,16 (2) 370-375
Position: Home > Articles > Effects of NO_3~--N/NH_4~+-N ratios on Chardonnay grape seedling growth and nitrogen nutrition Journal of Plant Nutrition and Fertilizers 2010,16 (2) 370-375

不同硝铵比对霞多丽葡萄幼苗生长和氮素营养的影响

作  者：
杨阳;郑秋玲;裴成国;翟衡
单  位：
山东农业大学园艺科学与工程学院作物生物学国家重点实验室
关键词：
霞多丽葡萄;硝铵比;生长;氮素营养
摘  要：
采用沙培试验,设置了等氮条件下5种不同硝铵比营养液处理,探讨了氮形态对霞多丽葡萄幼苗生长和氮素营养的影响。结果表明,霞多丽幼苗的生长量以硝铵比70/30时最大,全铵营养时最低;植株根系氮的平均吸收量在硝铵比为70/30时为最大值,达到70.89%,全铵营养时为最低值;叶片中的氮浓度和总氮量以全硝营养最大,全铵营养最低,后者仅是全硝营养的61.8%和19.46%。霞多丽幼苗根系内NH4+-N浓度与营养液中NH4+-N的浓度成极显著正相关(r=0.9805),且当铵态氮比例超过30%时根系中NH4+浓度显著增加。叶片中硝酸还原酶的活性以硝铵比70/30最高,当铵态氮比例大于30%,再继续增加铵态氮的比例时,显著抑制了叶片中硝酸还原酶的活性;而对根的硝酸还原酶活性无明显影响。试验证明,硝铵比70/30是霞多丽较适宜的氮素形态配比,较高比例的铵态氮增加了植株器官中NH4+的浓度,抑制了霞多丽幼苗的生长及对氮素的吸收积累。
译  名：
Effects of NO_3~--N/NH_4~+-N ratios on Chardonnay grape seedling growth and nitrogen nutrition
作  者：
YANG Yang,ZHENG Qiu-ling,PEI Cheng-guo,ZHAI Heng(College of Horticulture Science and Engineering,Shandong Agricultural University/Key Laboratory of Crop Biology,Taian,Shandong 271018,China)
关键词：
Chardonnay grape;NO-3-N/NH+4-N ratios;growth;nitrogen nutrition
摘  要：
A sand culture experiment was conducted to determine the effect of different nitrogen supply forms on growth and nitrogen nutrition of Chardonnay grape seedling.Five NO-3-N/NH+4-N ratios were set up as 100/0,70/30,50/50,30/70, and 0/100 with total nitrogen being equal amount.The results indicated that Chardonnay grape seedling fertilized with NO-3-N/NH+4-N ratios for 70/30 had the highest biomass and root nitrogen absorption(70.89%);While Chardonnay grape seedling had the lowest biomass when fertilized with ammonium as the sole nitrogen source.The Chardonnay grape seedling fertilized with NO-3-N/NH+4-N ratios for 100/0 had the highest amount of nitrogen concentration and total N in leaf,while Chardonnay grape seedling fertilized with NO-3-N/NH+4-N ratios for 0/100 had the lowest,which were 61.8% and 19.46% of fertilized with NO-3-N/NH+4-N ratios for 100/0,respectively.The concentration of NH+4-N in root significantly correlated to the nutrient solution(r=0.9805),and the concentration of NH+4-N in root increased significantly when the proportion of ammonium nitrogen was higher than 30%.Leaf nitrate reductase activity was the highest when fertilized with NO-3-N/NH+4-N ratios for 70/30.The leaf nitrate reductase activity was impaired significantly when the proportion of ammonium nitrogen was higher than 30%,but the root nitrate reductase activity was not influenced.The experiment proved that NO-3-N/NH+4-N ratios for 70/30 was appropriate for the Chardonnay grape seedling,and a lower proportion of the NO-3-N/NH+4-N ratios increased the concentration of NH+4 in Chardonnay grape seedling organs,consequently inhibited nitrogen absorption and the biomass accumulation.

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