【摘要】 对来自加拿大的7个班克松种源的播种苗,采用阳光灯(B2)、日光镝灯(B3)、碘钨灯(B4),进行了夜间补光试验。结果表明:阳光灯(B2)对于促进苗木生长的效果最好,7个种源平均苗高和地径分别大于对照109%和65%;其次是日光镝灯(B3),苗高和地径分别大于对照74%和45%;再次是碘钨灯(B4),苗高和地径分别大于对照52%和34%。在相同的补光和多种管理措施条件下,A2和A3等2个种源的生长量优势明显,2年生苗高分别达到了23.15 cm和24.24 cm;地径分别达到了0.39 cm和0.50 cm。更多还原

【Abstract】 The experiment of supplement lighting at night was conducted on seven planting seedlings of Pinus banksiana provenance from Canadian using sun light lamp(B2),dysprosium fluorescent lamp(B3) and iodine tung-sten lamp(B4).The results showed that: the sun light lamp(B2) had best effect for the promotion of seedling growth,average height and basal diameter of seven provenance were greater than that of 109 percent and 65 per-cent re-spectively,dysprosium fluorescent lamp(B3) had good effect,average height and basal diameter were more than 74% and 45%,iodine tungsten lamp(B4) had bad effect,height and basal diameter were greater than that of con-trol respectively 52 percent and 34 percent.Under the conditions of using the same supplement lighting and vari-ous management measures,growth increment of A2 and A3 had obvious advantages,the height of 2-year-old seedling of Pinus banksiana reached 23.15 cm and 24.24 cm respectively;and basal diameter reached 0.39 cm and 0.50 cm respectively.更多还原