喜树人工复合群落生长发育动态变化与气象因子的关系

The Relationship Between the Growth of the Camptotheca acuminate Artificial Compound Community and Meteorological Factors

以国家二级重点保护植物喜树和国家一级重点保护植物南方红豆杉为目的树种,以在其林下种植长春花构建形成的喜树人工复合群落和纯种种植为对象,研究其在一个生长季节的生长发育动态特征、气象因子动态特征以及两者的关系。结果表明,喜树人工复合群落和纯种种植生长发育动态变化趋势相一致,而复合群落中喜树、南方红豆杉和长春花的株高和基径及其生长速率较其纯种种植差异较大。喜树人工复合群落和纯种种植生长发育动态特征与气象因子相关性方面,人工复合群落和纯种种植在一定范围内较高的土壤湿度均有利于喜树的高生长,一定的净辐射月累积均有利于喜树的基径生长;南方红豆杉株高方面,人工复合群落与降雨量月累积值呈较大的正相关,纯种种植则与土壤温度月均值呈较大的正相关,南方红豆杉基径方面,人工复合群落与气温月均值呈正相关,而纯种种植的基径与净辐射月累积值呈一定的正相关;人工复合群落和纯种种植,土壤温度均有利于长春花高生长和茎生长。利用喜树、南方红豆杉和长春花生长发育与各气象因子的相关关系分析,从而在其栽培过程中采取相应的人工定向培育措施,为这3种药用植物的人工复合群落的优质栽培提供理论依据。

This research takes Camptotheca acuminate which is grade two of national key protective plant and Taxus chinensis var. mairei which is grade one of national protective plant two plants as objective species and manually collocates the ,fight structure of aboveground and underground of C. acuminate, T. chinensis var. mairei and Catharanthus roseus, establishes compound. To study the dynamic characters of the growth of the C. acuminate artificial compound community and solid area, the dynamic characters of the meteorological factors and the relationships of them. This study results indicate that in one growth reason the dynamic tendency of the growth of the compound community and solid area is similar, but the difference of the plant height, the basal diameter and the growth rate of the compound community and solid area is obvious. The soil humidity is favorable to the the plant height of C. acuminate and the month cumulation of net radiation is favorable to the basal diameter of C. acuminate of the compound community and solid area ; The relationship between plant height of T. chinensis var. mairei of the compound community and month cumulation of rainfall is positive, yet it is positive relation with the net radiation in solid area ;The month temperature of soil is favorable to the plant height and the basal diameter of C. roseus of the compound community and solid area. In base of the relationships between the growth characters and the meteorological factors characters, and so we can actualize directional artificial cultivation in the progress of cultivation and provide academic guidances of the excellent cultivation of the compound community of three officinal plant.