樟子松、长白落叶松种子等级划分研究  

SEED GRADING OF PINUS SYLVESTRIS VAR MONGOLICA AND LARIX OLGENSIS

作　　者：王凤霞[1] 刘慧荣[1] 宋红 王丹红 

机构地区：[1]东北林业大学 [2]黑龙江省林业厅

出　　处：《东北林业大学学报》1993年第4期8-14,共7页Journal of Northeast Forestry University

摘　　要：为更好地促进林业发展和国际林木种子贸易工作,遵照《国际种子检验规程》有关规定,对樟子松、长白落叶松两树种种子样品的净度、发芽率进行了实验研究。其分析结果表明:(1)两树种种子样品的净度和发芽率均符合正态分布,以(?)±s为分级线取正、修匀为宜。(2)建议标准与1987年国家标准相比:两树种净度提高1％;而发芽率,樟子松相差0％～5％,长白落叶松相差—1％～—5％。(3)两树种种子净度、发芽率的等级和Y值亦遵从正态分布,可用Y值对其综合评定。In order to improve the forestry development and International forest tree seed trade, we conduct experiment on sample seed purity, germination rate of Pinus sylvestris var. mongolica, Larix olgensis according to the《International seed identify regulation》The results show that: (1) The sample seed purity, germination rate of the tested species all conform to Normal distribution. x±s as grading line: (2) The suggested standard compared with national standard of 1987: Seed purity increased by 1%; The germination rate of sylvestris var. mongolica differenceis 0%—5%; and larix olgensis difference is—1&——5%. (3) seed purity, germination rate and yconform to Normal distribution, as comprehensively evaluated.

关 键 词：樟子松 长白落叶松 种子 分级 标准 

分 类 号：S791.253[农业科学—林木遗传育种]