福建柏苗高生长期划分的有序样本聚类分析

以福建柏苗高15 d净生长量为样本,采用有序样本聚类分析方法,将福建柏苗高生长过程划分为5个时期:出苗期为3月1~30日,幼苗期为4月1日~5月30日,速生前期为6月1~15日,速生期为6月16日~9月30日,生长后期为10月1日~12月30日。速生前期和速生期的净生长量只占全年总生长量的28.5%,而幼苗期、生长后期的净生长量分别占全年总生长量的30.0%、34.9%。因此结合福建柏的生理特性提出幼苗期、生长后期的管理措施,为培育福建柏优质壮苗提供依据。

The sequential sample cluster analysis of seedling height growing stage division of Fokienia hodginsii

Taking the net growth increment of the Fokienia hodginsii seedling height in 15 days as sample,using the sequential sample cluster analysis method,the seedling height growth process of F.hodginsii can be divided into 5 periods: the seedling emergence period(March 1～March 30);the young sprout period(April 1～May 30);the rapid growth early period(June1～June15);the rapid growth period(June16～September 30);the growth late period(October1～December30).The net growth increment of rapid growth early period and rapid growth period is only 28.5% in the whole growth increment in a year,but the percentage of the young sprout period is 30.0% and the growth late period is 34.9% of the total growth increment,so this paper puts the growth management measures of the young sprout period and the growth late period with the physiological characteristics of F.hodginsii,and prvides a basis for growing high-quality strong seedlings of F.hodginsii.