论文部分内容阅读
在１９９２年从白城市林科所的松树对比试验林中黑松树上采收种子，次春播种育苗的５年生苗木中，分别选出了具有明显杂种优势的黑松×樟子松和黑松×长白松天然杂种２３株和１６株。
In 1992, the perennial seedlings of five-year-old seedlings were harvested from black pine trees in the pine-tree trial of Linchu of Baicheng City, and black pine (Pinus sylvestris L.) and Pinus sylvestris × Changbai pine natural hybrid 23 and 16 strains.