摘要
重庆是我国14个油茶重点分布省市之一,油茶发展潜力巨大.通过实地调查秀山、酉阳、彭水和梁平4个县的36个油茶林分布,实测235株油茶单株,初步选出63株优树.油茶优树分布在海拔500 m以下的占56%,500～800 m的占27%,800 m以上的占17%.优树年龄在30年以下的占13%,30～60年的占58%,60年以上的占29%.油茶优树果实颜色主要有青色、红色2种,其中青果占35%,红果占65%.单位冠幅面积产果量为1～2 kg的占41%;2～4 kg的占37%;4 kg以上的占22%,最高单位冠幅面积产量达7.24 kg.运用灰色关联分析,筛选出关联度值在0.6以上的5株油茶,可作为优良单株.
Chongqing was one of fourteen important Camellia oleifera distribution areas in China,and so there existed a great potential for C.oleifera industry.Based upon investigating 36 plantations and 235 trees in Xiushan,Youyang,Penshui and Liangping counties,63 C.oleifera surplus trees were selected primarily.The results showed that firstly,the proportions of surplus trees in different altitude of which included under 500 m,500～800 m and above 800 m were 56%,27% and 17% respectively.For surplus tree ages,secondly,the proportions of different years which included under 30,30～60 m and above 60 were 13%,58% and 29% respectively.Thirdly,two kinds of colors of the fruit were cyan and red.The proportion of cyan fruits and red ones were 35% and 65% respectively.Fourthly,the proportion of fruit yields by unit crown area which included 1～2 kg,2～4 kg and above 4 kg were 41%,37% and 22% respectively.And the maximum fruit yield by unit crown area could reach 7.24 kg.Through grey correlation analysis,moreover,five superior C.oleifera surplus trees were screened which their incidence degrees were above 0.6.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期156-161,共6页
Journal of Southwest China Normal University(Natural Science Edition)
关键词
油茶
优树
初选
重庆
Camellia oleifera
surplus tree
primary selection
Chongqing
