强力班克木5个种源苗期生长研究

Early Growth Analysis of 5 Banksia robur Provenances

山龙眼科（Proteaceae）的班克木属（BanksiaL．f．）共有80余种，主要分布于澳大利亚西南部珀斯的低山丘陵和澳洲东部塔斯马尼亚地区，多为常绿或半常绿乔木，少数灌木与匍匐灌木。班克木属是澳大利亚自然植被中的一个优势种群，多数种耐贫瘠、耐盐雾，适应性较广。班克木花色艳丽、花形独特、种类多、花期长、瓶插时间长，是集观花、观叶、观果价值于一体的优良园林观赏植物，在国外已有良好的鲜切花市场并形成稳定的规模化生产，同时也是石山造林的优良树种。

By afforestation triM, the adaptation and growing states of 5 Banksia robur provenances in Jianfengling of Hainan were studied, and the effects of provenance and fertilizer treatment on the survival rate, height and ground diameter were analyzed. The results showed that all the 5 provenances had a good adaptability in Hainan province. 2 months after planting, the survival rate was 85%, but it was easily affected by air humidity and became lower in the dry season, especially the provenance No. 38164, showing that the B. robur needs wet environment. The study also found that different provenances and fertilizer treatments had significant impact and interactions on the growth of B. robur. The provenance No. 38163 had the fastest grow speed, with 1.35 mm of ground diameter increment and 10.57 cm of height increment during 3 months, while the provenance No. 38164 had the lowest grow speed. The provenance No. 39163 also had a strong barren resistance, while the provenances No. 38177 and No. 38199 needed well water and nutrient conditions. Different fertilizer treatments could enlarge the difference in growth status of the provenances, and the composted cattle manure had the best effect on promoting growth status, which could be used as the best fertilizer in afforestation.