油茶果穗两用林春梢生长及营养特性分析

Analysis of Spring Shoot Growth and Nutrition Characteristics of Fruit-Scion Purpose Plantations of Camellia oleifera

为给油茶果穗两用林生产管理提供科学依据,研究了油茶果穗两用林中6个无性系的春梢生长及营养特性,结果表明:各无性系春梢萌发时间不同,岑软ZJ14稍早,在2月上旬开始萌发;岑软2号、岑软ZJ11、岑软ZJ24和岑软3-62基本一致,在2月中旬萌发;岑软3号最迟,在3月上旬萌发。各无性系平均单株春梢数和花芽数均有差别,枝条长度也不同,岑软ZJ11春梢枝条长度最大,平均为11.03 cm,显著大于岑软2号、岑软3号和岑软ZJ14,岑软ZJ24和岑软3-62居中。各无性系叶片N元素含量和岑软2号、岑软3号、岑软ZJ24的Mg含量均低于适宜范围,因此应增加林地的N肥施用量,并适当补充Mg元素。

Spring shoot growth and nutritional characteristics of six clones of Camellia oleifera in fruitscion purpose plantations of C.oleifera were analyzed in order to provide scientific basis for production and management of C.oleifera fruit-scion purpose plantations.The analysis showed that spring shoots of each clone germinated differently.Clone Cenruan ZJ14 germinated in early February,the earliest;clones Cenruan 2,Cenruan ZJ11,Cenruan ZJ24 and Cenruan 3-62 germinated in mid February,almost at the same time;clone Cenruan 3 germinated in early March,the latest.All the clones were different in average number of spring shoots and flower buds per plant,as well as in shoot length.The spring shoots of Cenruan ZJ11 was the longest with an average of 11.03 cm,significantly longer that those of clones Cenruan2,Cenruan 3 and Cenruan ZJ14,and the spring shoots of clones Cenruan ZJ24 and Cenruan 3-62 were moderately long.The content of nitrogen in the leaves of all the clones and the content of magnesium in the leaves of clones Cenruan 2,Cenruan 3 and Cenruan ZJ24 were lower than the suitable range.Therefore,the application rate of nitrogen fertilizer should be increased and magnesium should be supplemented properly.