东革阿里在海南的初期物候观察和生长规律研究

Observation on Growth and Phenology of Eurycoma longifolia in Hainan

为了解东革阿里Eurycoma longifolia在海南的引种适应情况,为东革阿里在海南的规模化种植提供技术支撑,于2019年2月至2020年3月对东革阿里1年生实生苗进行物候、苗高生长量、地径生长量的动态观测和研究,并分析苗高、地径年生长量与气象因子的相关性。结果表明,东革阿里在海口云龙地区可全年生长,全年可抽梢2~5次,抽梢期主要集中在3—11月;花序为顶生圆锥花序,开花时间为5—7月;苗高年增长量为48.72 cm、地径年增粗有11.61 mm;苗高年生长呈现"慢—快—慢"的"S"形趋势,全年有1次生长高峰(2019年11月),月净苗高生长量占全年苗高生长量的21.63%;地径亦有1次生长高峰期(2019年12月),月净生长量占全年地径生长量的18.70%;苗高生长量和地径生长量均与月平均光照强度呈显著负相关(P<0.05),与其他气象因子的相关程度不显著,但是苗高生长量与地径生长量之间呈极显著相关(P<0.01)。

In December 2017,purchased Eurycoma longifolia seeds were sewed in Haikou,Hainan province in non-woven containers.From February 2019 to March 2020,observations were carried out on phenology,seedling height and ground diameter of the above seedlings.The results showed that E.longifolia could grow in Haikou all year round and shoot 2-5 times,and the sprouting period was mainly from March to November.The inflorescence was terminal panicle,the flowering time was from May to July.The annual increment of seedling height was 48.72 cm,and that of ground diameter was 11.61 mm.The growth of seedling height was slow-fast-slow with one peak in November,when the net growth accounted for 21.63%of the whole year growth.The ground diameter also had one growth peak in December with the net growth accounted for 18.70%of the whole year.The seedling height and ground diameter growth had evidently negative correlation with the average monthly light intensity(P<0.05).