奉节脐橙树体营养状况研究  

Leaf Nutrient Status of Navel Orange in Fengjie,Chongqing

作　　者：杨惠栋[1] 淳长品[1] 彭良志[1] 付行政[1] 凌丽俐[1] 江才伦[1] 曹立[1] 袁高鹏[1] 张梦娇[1] 

机构地区：[1]西南大学柑桔研究所/国家柑桔工程技术研究中心,重庆400712

出　　处：《中国南方果树》2016年第2期10-15,共6页South China Fruits

基　　金：国家现代农业产业技术体系建设专项(CARS-27-02A);重庆市科委应用开发计划项目(cstc2014yykfA8003;cstc2013yykfA80012);重庆市"121"科技支撑示范工程项目(cstc2014zktjccxBX0069);科技部农业科技成果转化资金项目(2013GB2F100396);江西省2011协同创新项目资助

摘　　要：为了解重庆三峡库区奉节县脐橙树体营养状况,2010—2013年对该县7个主产乡镇的191个脐橙园的当年生春梢营养枝叶片营养元素含量进行了分析。结果表明,树体营养元素失衡较严重。总体上,在叶片大中量元素中,N含量充足且以过剩(偏高或过量)为主,过剩比例为58.11%;P含量以适宜和偏高为主,比例分别为59.16%和31.94%;K含量以偏低为主,含量不足(缺乏或者偏低)的比例为56.03%;Ca含量以适宜和过剩为主,比例分别为62.83%和30.89%;Mg和S含量不足的比例分别为31.94%和26.70%。在微量元素中,Fe含量最为丰富,含量不足的比例仅5.76%;Mn和B处于适宜范围的果园比例也较高,分别为70.68%和62.07%;Zn含量最为缺乏,含量不足的比例高达82.20%;Cu含量不足的果园也较高,占51.84%。奉节脐橙生产上应该重视补充锌肥,适量补充钾、镁和铜肥。To investigate the nutrient status of navel orange trees in the Three Gorges Reservoir Area in Chongqing,leaf samples collected from 191 navel orange orchards in 7main production towns of Fengjie county of Chongqing were analyzed.Results showed that the trees in investigated orchards were under the imbalance of nutrition.N contents were high or too high in most of samples,with 58.11% of them at excess level.P contents in 59.16% samples were optimum and slightly higher in 31.94% of samples.K contents in 56.03% samples were below the optimum level.Ca contents in 62.83%and 30.89%samples were optimum and surplus,respectively.Of 31.94%and26.70%leaf samples showed insufficient Mg and S,respectively.Regarding to the microelements in the leaf,Fe was rich in most of samples and only 5.76% of samples at the lower level of Fe.Mn content in 70.68% samples and B content in 62.07% samples were at optimum level.Most orchards（82.20%）suffered from shortage of Zn,and 54.97% of them were Zn deficiency.Cu shortage was found in 51.84% samples.It is important that the navel orange orchards in Fengjie county have to be supplied with K,Mg,Zn and Cu in order to keep the balance of nutrition.

关 键 词：奉节 脐橙 叶片 营养元素 丰缺 

分 类 号：S666.4[农业科学—果树学]