摘要
为油茶嫁接壮苗的培育提供参考,在油茶种苗标准化繁殖试验基地采用定株观察方法对1年生油茶嫁接苗的苗高、地径、鲜重和干重变化规律进行连续观测。结果表明:1年生油茶嫁接苗的苗高、地径、鲜重和干重均呈慢-快-慢S型曲线变化趋势,且4—6月为缓慢生长初期、7—11月为快速生长期、12月至翌年3月为缓慢生长末期。嫁接苗生长1年的地径为0.48cm,苗高为41.45cm,鲜重为36.90g,干重为10.75g,地上部鲜重为24.30g,地下部鲜重为12.6g,地上部干重为7.34g,地下部干重为3.41g。地径、苗高与生长时间呈幂函数关系,地径与苗高生长的一元线性回归方程为y=74.715x+5.344 2,相关系数R^2=0.999 2,相关性达极显著。
The variation regularity of height,ground diameter,fresh weight and dry weight of Camellia vietnamensis grafted seedlings with one year old is observed by the fixed seedling method in the standardization reproduction base of C.vietnamensis seedlings to provide a reference for raising strong C.vietnamensis grafted seedlings.Results:The growth variation trend of height,ground diameter,fresh weight and dry weight of C.vietnamensis grafted seedlings with one year old shows a S curve with slowrapid-slow pattern.That is,the early slow growth period,rapid growth period and late growth period occurs from April to June,from July to November and from December to March next year respectively.The ground diameter,height,fresh weight,dry weight,fresh weight of overground part,fresh weight of underground part,dry weight of overground part and dry weight of underground part of C.vietnamensis grafted seedlings with one year old are 0.48 cm,41.45 cm,36.90 g,10.75 g,24.30 g,12.6 g,7.34 g and 3.41 g separately.The relationships between ground diameter,height and growth time present the power function relationship.The simple linear regression equation between ground diameter and height growth is y=74.715 x+5.344 2 and the correlation coefficient R^2 reaches 0.999 2.
出处
《贵州农业科学》
CAS
2017年第11期43-47,共5页
Guizhou Agricultural Sciences
基金
海南省重大科技计划项目"海南油茶优质高产关键技术及加工产品研发"(ZDKJ20170044)
海南省重点研发计划项目"海南油茶种苗繁育及种植资源利用价值评价与示范"(ZDYF2016157)
关键词
油茶
嫁接苗
生长规律
生长曲线
生长指标
Camellia vietnamensis
grafted seedling
growth regularity
growth curve
growth index
