作　　者： ; ; ; (李际平）;

机构地区： 广东海洋大学寸金学院

出　　处： 《林业科学》 2013年第7期163-169,共7页

摘　　要： 木榄（Bruguiera gymnorrhiza）是红树科木榄属常绿乔木,生长于泛热带海岸的中潮带至高潮滩地,具有膝状呼吸根及支柱根,是我国红树林植物中分布最广的主要乔木树种之一,种子在母树上就已经萌发成苗,故称为胎生繁殖体或者胚轴（廖宝文等, Construction of a mathematic model for forecasting viviparous propagule yield of Bruguiera gymnorrhiza is important for mangrove forestations and mangrove management. In this study, viviparous propagules of B. gymnorrhiza were used as the research object in Mangrove Nation Natural Reserve at Gaoqiao, Zhanjiang city, Guangdong province. The indexes of different layers were investigated, and then the multivariate analysis in regressive and path analysis were conducted to construct a mathematic model for forecasting viviparous propagule yield of B. gymnorrhiza. The result showed that： B. gymnorrhiza seed yield was very significantly correlated with the diameters of basal stem and crown. It also had significantly positive correlation with the diameter and crotch angle of lateral branches in first class, leaf length, or leaf-shaped index, suggesting the seed yield had close relationships with phenotypic characteristics. Thus, we could regulate the yield by changing the phenotypic characteristics. With multiple stepwise regression analysis we constructed effective regression equation： Y=-148.131＋127.471X4-11.113X5＋2.048X7, which can be used for forecasting and controlling B. gymnorrhiza viviparous propagule yield. The results of path analysis showed that the factors determining the seed yield were X4X7X5. Thus, increasing the crown is the best way to increase the seed yield for individual B. gymnorrhiza.

关 键 词： 木榄 胎生繁殖体 产量预测 预测模型

领　　域： [农业科学]