广西油茶桑寄生发病情况调查及清除成效分析  

Incidence Investigation and Analysis of Parasitic Loranthus in Oil-tea Camellia and its Clear Effectiveness of Guangxi

作　　者：梁国校[1] 王芳 梁乃鹏 韦维[1] 陈国臣[1] LIANG Guo-xiao;WANG Fang;LIANG Nai-peng;WEI Wei;CHEN Guo-chen(Guangxi Forestry Research Institute, Guangxi Key Laboratory of Special Non-wood Forest Cultivation and Utilization, Improved Variety and Cultivation Engineering Research Center of Oil-teaCamellia in Guangxi, Nanning 530002, China;Guangxi State Weidu Forest Farm, Laibin, Guangxi 546100, China)

机构地区：[1]广西壮族自治区林业科学研究院广西特色经济林培育与利用重点实验室广西油茶良种与栽培工程技术研究中心,南宁530002 [2]广西国有维都林场,来宾546100

出　　处：《广西林业科学》2017年第1期107-110,共4页Guangxi Forestry Science

基　　金：国家科技支撑项目专题(2009BADB1B0601);中央财政林业科技推广示范项目(TB201201);科技部国家林业科学数据共享服务平台子项目(2014-11)

摘　　要：对广西巴马、那坡、田阳、三江、龙胜等5个油茶主产区油茶桑寄生发病情况进行了调查,并对清除桑寄生的成效进行了分析,结果表明:5个县区均发现了不同程度的桑寄生,其中田阳的桑寄生情况最为严重(80.00%),其次是巴马(63.33%)和那坡(50.00%),三江(20.00%)和龙胜县(13.33%)桑寄生比率较低;5枝以下桑寄生枝,对植株生长发育不明显,但寄生枝的数量超过5个时,植株冠幅、叶绿素相对含量、花芽数量和座果数降低明显;清除桑寄生后2年,植株的冠幅、结果枝的数量、叶绿素相对含量、花芽数量以及座果数、单果重均显著增加,清除桑寄生后2年,可增加收入4 796元/hm^2。The incidence situation of parasitic loranthus in oil-tea camellia in five camellia production regions of Guangxi has been investigated and its clear effectiveness has been analyzed. The results showed that different levels of parastic loranthus has been observed in five counties, among which, the situation of parasitic loranthus was the most serious in Tianyang, the ratio reached 80%. Moreover, the ratio of Bama and Napo was 63.33% and 50%, respectively. The ratio in Sanjiang and Longsheng County was lower than that of other counties. The ratio of parastic loranthus in stand was 20.00% and 13.33%, respectively. The branch amount of parastic loranthus with less than five had little influence in the camellia growth. However, when the branch amount was more than five, the crown, relative content of chlorophyll, the number of buds and the fruit were obviously decreased. Two years later, the crown, relative content of chlorophyll, the number of buds and the fruit were increased rapidly after the parastic loranthus has been cleared. And the income has increased to 4 796 yuan/hm2.

关 键 词：油茶 桑寄生 调查 

分 类 号：S794.4[农业科学—林木遗传育种]