闽北耐寒相思种源选择研究初报

A Preliminary Report on Species Provenance Selection of Temperate Acacias in North Fujian Province

从澳大利亚引进９个耐寒相思树种共３３个种源，育苗及造林试验结果表明，各树种在适应性和生长量方面存在显著差异．夹竹桃叶相思具有很强的耐贫瘠、耐干旱能力及早期速生特性，其抗寒性、抗病虫性明显优于其它树种，以１７１４７、１６９２９为表现最优的种源，前者的干形更为通直．此外，夹竹桃叶相思１４７４２、榕叶荆１５８４１、黑荆１５８５０、１６６２３和１６６２６都具有较好的速生特性．银荆适合于高海拔地区的生产，在海拔较低地段表现不佳，灰木相思、黑木相思和迪氏荆的各种源与其它引种树种相比，在３年期间，尚无明显的生长优势，需作继续观测．

Thirty three provenances of nine temperate acacias were introduced from Australia and tested in the nursery and fields in Nanping City, Fujian Province The results showed that there are significant differences in growth and adaptation among species and provenances Acacia neriforlia exhibited strong resistance to drought and nutrient deficiency, and its frost hardiness and resistance to pests were significantly superior to the others Of which the provenances 17147 from north of Crows Nest (QLD) and 16929 from SW of Goondiwindi (QLD) manifested the best performance, and the former having better stem form Besides,A neriforlia 14742 from south of Turralin (QLD), A filicifolia 15841 from SW Singleton (QLD),A mearnsii 15850 from SE of Araluen (NSW), 16623 from north Batemans Bay (NSW) and 16626 from SW Bungendore Po (NSW) grew quite well in the cool mountainous areas A dealbata is suitable for growing in high altitude locations, but grew poorly in low altitudes Compared with the other species, A melanoxylon, A implexa and A deanei haven't shown growth advantages during the period of the first three years, and continual observation for them is needed