油茶优良无性系1年生苗木生长表现

Growth Performance of Annual Seedlings of Superior Clones in Camellia oleifera

为给油茶良种优质苗木的培育与合理施肥提供理论依据,定量研究了赣无系列油茶24个无性系的生长规律,将其苗木生长过程划分为前慢期、速生期和后慢期3个阶段,从9月中旬开始各无性系的苗高与叶片都进入速生期,9月下旬达生长高峰,各无性系间生长量差异不显著,但不同生长阶段差异显著;同时,调查分析了各无性系苗木成活率与保存率变化情况,其中赣无24、赣447、兴46与赣190成活率较高,无24与赣84-3成活率较低;各无性系保存率随时间递减,其中赣84-8、赣83-1、赣447与赣无24最终保存率较高,而无12保存率最低,不到60%。

In order to provide theoretical basis for cultivation and reasonable fertilization of superior seedlings, growth performance of 24 Ganwu Series of clones in Camellia oleifera was studied quantitatively. Seedling growth process was divided into three phase of slow-growing, fast-growing and slow-growing. Seedling had begun to enter the fast-growing period since middle of September, and reached the growth peak at the last ten-day of September. There was no significant difference among increments of the clones, but there was significant difference among increments at different growth phases. Meanwhile, changes of survival rate and preserving rate of the clones of seedlings were analyzed. The survival rates of Ganwu 24, Gan 447, Xing 46 and Gan 190 were higher, and those of Gan 84-3 and Wu 24 were lower. The preserving rates of the clones of seedlings were decreased with time, in which the final preserving rate of Gan 84-8, Gan 83-1, Gan 447 and Ganwu 24 were higher, and that of Wu12 was the lowest, and less than 60%.