Early Growth Analysis of 5 Banksia robur Provenances
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1.
Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, Guangdong, China
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Received Date:
2015-03-11
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Abstract
By afforestation trial, 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.
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