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扦插时间和基质对条叶榕扦插繁育的影响
杨乐,岳春雷
浙江省林业科学研究院,浙江省林业科学研究院
摘要:
为研究在不同季节扦插和不同基质对条叶榕(Ficus pandurata var. angustifolia)扦插繁育的影 响,以健壮的条叶榕植株作为母苗,分别于 2014 年 3 月 7 日、5 月 25 日、8 月 3 日,在浙江省林业科学 研究院温室大棚内采用细河沙和“泥炭 + 珍珠岩 + 肥料”2 种基质扦插繁育条叶榕。结果表明:在以细河 沙为基质的 3 次扦插试验中,3 月底扦插的条叶榕插穗的成活率最高(95.2%),根最长(5.3 ± 2.1 cm), 根数量也最多(40~70 根);采用细河沙扦插条叶榕插穗的成活率(71.4%~95.2%)显著高于“泥炭 + 珍 珠岩 + 肥料”基质(18.4%~59.8%);在 9 种“泥炭 + 珍珠岩 + 肥料”配方中,配方 3(泥炭 : 珍珠岩 = 6 : 4,肥料含量 2.5 kg · m-3)培育的条叶榕幼苗成活率最高(59.8%),而配方 8(泥炭 : 珍珠岩 =8 : 2,肥 料含量 2.0 kg · m-3)培育的条叶榕幼苗成活率最低(18.4%),可能是因为配方 3 中珍珠岩比例高,无纺 布袋中的条叶榕插穗的新生根容易获得氧气和水。2015 年春,使用细河沙基质和配方 3 的“泥炭 + 珍珠 岩 + 肥料”配比的基质扦插条叶榕插穗 2 个月后发现,使用细河沙基质培育的条叶榕插穗根较长、枝较 短,而使用配方 3“泥炭 + 珍珠岩 + 肥料”基质的条叶榕插穗根较短、枝较长。
关键词:  条叶榕  扦插  扦插时间  基质
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基金项目:浙 江 省 林 业 厅 林 业 推 广 项 目(2013B11) 和 浙 江 省 省 属 科 研 院 所 专 项 计 划 项 目(2015F30001,2016F30011, 2017F30016)。
Effects of Different Seasons and Substrates on Shoot Cutting Propagation of Ficus pandurata var. angustifolia
Yang Le and Yue Chunlei
Zhejiang Academy of Forestry,Zhejiang Academy of Forestry
Abstract:
To study the effects of different time on Ficus pandurata cutting, the strong shoots of 3-year-old F. pandurata were selected to do cutting experiments in the sand substrate in the greenhouse of Zhejiang Forestry Academy in 7th March , 25th May, and 3rd August, 2014. Furthermore, To study the effects of substrate on F. Pandurata cuttings, two kinds of substrate, i.e., sand and the mixture of peat, perlite, and fertilizer, were chosen to do cutting experiments in the end of March, 2014. Besides, we set 9 kinds of different formulations as substrate to analyze the best proportion of peat, perlite, and fertilizer. The results showed that the situation of shoots growth was best in the end of March among the 3 cutting experiments. The survival?rate?of F. pandurata amounted up to 95.2%, the root length grew up to 5.3 ± 2.1cm, and the root number reached from 40 to 70. Moreover, the survival rates of F. pandurata in the sand substrate (71.4~95.2%) were significantly higher than those in the mixture of peat, perlite, and fertilizer substrate (18.4~59.8%). In addtion, the survival rates of the seedlings of F. pandurata cultivated by the formulation 3 (peat: perlite=6:4, fertilizer=2.5 kg/m3) and the formulation 8 (peat: perlite=8:2, fertilizer=2.0 kg/m3) are 59.8% and 18.4%, respectively, which was the highest and the lowest survival rate among the 9 kinds of formulations. The probable reason was that the proportion of perlite in the formulation 3 was relative high, which made oxygen and water available to the roots in the non-woven cloth bags. Furthermore, the shoots of Ficus pandurata were cultivated by sand substrate and the formulation 3 (peat: perlite=6:4, fertilizer=2.5 kg/m3), respectively. After 2 months, Ficus pandurata in sand substrate had a longer new roots and a shorter new shoots compared with those in the the mixture of peat, perlite, and fertilizer.
Key words:  Ficus pandurata  cutting  cutting time  substrate