赣南纽荷尔脐橙叶片微量元素含量状况

为了解赣南产区纽荷尔脐橙叶片黄化原因，2008年对赣南9个县（市、区）121个脐橙园脐橙叶片微量元素进行了分析。结果表明，叶片Fe、Mn、Zn、Cu、B和Mo的含量分别为（127.90 ± 21.15）、（115.79 ± 136.72）、（16.50 ± 4.05）、（8.42 ± 9.32）、（81.88 ± 33.72）和（0.36 ± 0.14）mg · kg-1；在各脐橙园中，叶片Mo、Fe、Mn、B、Cu和Zn含量处于适量及以上水平的分别占100%、99.17%、90.91%、92.56%、62.81%和4.96%，叶片Fe、Mn、B、Cu和Zn含量处于低量水平的分别占0.83%、7.44%、7.44%、29.75%和23.97%，处于缺乏水平的仅有Mn、Cu和Zn，分别占1.65%、7.44%和71.07%。表明赣南产区脐橙叶片普遍无Mo、Fe、Mn和B缺乏问题，部分产区脐橙叶片Cu含量偏低，大多数脐橙叶片的Zn含量处于缺乏水平，生产上需要重视补充Zn肥，适量补充Cu肥。

Characteristics Analysis of Microelement Contents in Newhall Navel Orange Leaves in Southern Jiangxi Province

To probe the causes of leave yellowing of Newhall navel orange in southern Jiangxi Province，leaf microelements of Newhall navel orange（Citrus sinensis Osbeck）trees on trifoliate orange Poncirus trifoliata（L.）] rootstocks in 121 orchards in southern Jiangxi Province were analyzed. The results showed that the contents of Fe，Mn，Zn，Cu，B and Mo were（127.90 ± 21.15），（115.79 ± 136.72），（16.50 ± 4.05），（8.42 ± 9.32），（81.88 ± 33.72）and（0.36 ± 0.14）mg · kg-1，respectively. The orchards having leaf Mo，Fe，Mn，B，Cu and Zn with moderate content and above accounted for 100%，99.17%，90.91%，92.56%，62.81% and 4.96%，respectively，and those with low content for 0.83%，7.44%，7.44%，29.75% and 23.97%，respectively. Deficiency of leaf Mn，Cu and Zn were found in some orchards，1.65%，7.44% and 71.07%，respectively. The results indicated that generally there were no leaf Mo，Fe，Mn and B deficiencies in Newhall navel orange in this area. But leaf Cu content in some orchards was low，andmost orchards had leaf Zn deficiency problems. It is recommended that attention should be paid to Zn fertilizer application in navel orange orchards and Cu fertilizer is needed for the orchards with low leaf Cu content.