树苜蓿在甘肃的育苗试验.pdfVIP

第43卷 第 l2期 林 业 科 学 VoI．43．No．12 2 0 0 7年 12月 SCIENTIA SILVAE SINICAE Dec．，2 0 0 7 树苜蓿在甘肃的育苗试验 柴春山 蔡国军 孟少童 陈炜青 薛 睿 (甘肃省林业科学研究院 兰州730020) 关键词： 树苜蓿；引种；催芽；育苗；越冬；甘肃 中图分类号：$723．13 文献标识码：A 文章编号：1001—7488{2007)12—0149—07 Breeding Trial of Chamaecytisus palmensis in Gansu Province Chai Chunshan Cai Guojun Meng Shaotong Chen Weiqing Xue Rui (Gznsu Forestry sc mce and Technology Research Academy Lanzhou 730020) Abstract： Chamaecytisus palmensis is an evergreen legume shrub．It was introduced to China in 2002 for the first time from Australia and since then many studies，including forced germination treatments，germination test，direct sowing，container seedling and cutting seedling propagations，over—winter response，have been conducted in three districts(Dingxi，Tianshui and Wudu)of Gansu pmVinee in 2002--2005．The results showed that germination of C．palraensis took very long probably because the seeds had lipidic coat and a 63％ of the seeds had hard cost，and its 1 000一seed mass was 23．92 g．The six forced germ ination treatments were applied，and the effects of sodium carbonate and detergent treatments were moderate，however safe and practical among them．The viablility of all treated seeds were 82％ ，and the germination rate was 94．5％ in lab．The field germination test showed that the seeds imbibing to coat rupture had the fastest germination speed，the seed imbibing without coat rupture had moderate germination speed and poorer germ ination rate，whereas the seeds without any treatment had slower germination speed and best germ ination rate．The average germ ination rate and survival rate were 9 1．