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在台江县革东镇进行6个种源的马尾松种源试验。10年生林分的生长情况和经济效益分析结果表明,马尾松南带的广西桐棉和古蓬种源表现最为突出,各项生长指标及经济指标居于前列。与其他几个种源比较,其树高分别高出9~14个百分点;胸径分别高出167%及146%;单株材积分别高出11~33个百分点;蓄积量分别高出14~50个百分点;净现值是中带种源的152~762倍;内部收益率分别比中带种源高175~595个百分点。马尾松中带的湖南城步种源也表现良好。可引种到我省与试验所在地立地条件相似地区造林。
Six provenances of Pinus massoniana provenance were tested in Gedong Town, Taijiang County. The results of 10-year-old stand growth and economic benefit analysis showed that the provenance of Guangxi Tongbian and Gupeng were the most prominent in the southern Pinus massoniana, and the growth indicators and economic indicators were in the forefront. Compared with other provenances, the tree height was 9-14% higher than that of other provenances. The DBH was 167% and 146% higher than that of other provenances, and the stand volume was 11 ~ 33% higher than that of other provenances. The net present value is 152 ~ 762 times of that of middle belt. The internal rate of return is 175 ~ 595 percentage points higher than that of middle belt. Pinus massoniana in Hunan City step source also performed well. Can be introduced to our province and the test site site conditions similar to afforestation.