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72杨是绿化的优良树种之一。为摸索72杨插穗浸水时间长短对成活,生长的影响。于1980年春进行了72杨插穗浸水时间的试验。 试验插穗是取自1979年春扦插苗。1980年3月12月剪成插穗,随机从插穗中取出60根,分成6捆(每捆10根)。插穗经浸水1,2、3、4、5天和不浸水处理并分别秤重,求出每根插穗的平均吸水量和平均失水量(见表1)。
72 Yang is one of the green tree species. In order to explore 72 Yang cuttings immersion time on the survival and growth. In the spring of 1980, 72 young cuttings were immersed in water. Test cuttings taken from the spring of 1979 cuttings. March 1980 December cut cuttings, randomly removed from the cut 60, divided into 6 bundles (10 bundles per bundle). The cuttings were soaked in water for 1, 2, 3, 4, 5 days and not immersed in water and weighed separately. The average water absorption and average water loss per cut were calculated (see Table 1).