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立体漂浮育苗对烟苗素质及育苗成本的影响.pdf

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52 CROP RESEARCH                   2017,31(1) 立体漂浮育苗对烟苗素质及育苗成本的影响 雷天义,刘建丰 (邵阳市烟草专卖局,湖南邵阳422000) 摘 要:为了探讨立体增温漂浮育苗与常规漂浮育苗的差异,研究了不同增温措施对烤烟出苗率和烟苗素质及育 苗成本的影响。结果表明:加温大棚中加热育苗池的出苗率、成苗率、根冠比、根系体积分别比未加热育苗池的高 0.50%~2.50%、1.00%~3.50%、0.01 ~0.02、4.60~9.30 mL,其中上层加热育苗池的出苗率、成苗率、根冠比、 根系体积比下层分别高2.00%、2.50%、0.01、4.70 mL。增温大棚育苗烟苗的成苗期早于非增温大棚;但增温育 苗成本提高了1.24元/盘。增温育苗提高了烟苗素质,促进了烟苗生长发育。 关键词:烤烟;漂浮育苗;烟苗素质;成本 中图分类号:S572.04    文献标识码:A 文章编号:1001-5280(2017)01-0052-03    DOI:10.16848/ki.issn.1001-5280.2017.01.14 Effect of Stereo FIoating Breeding on FIue-cured Tobacco SeedIing QuaIity and SeedIing Cost LEI Tianyi,LIU Jianfeng (Tobacco Monopoly Bureau ofShaoyang,Shaoyang,Hunan422000,China) Abstract:In order to study the difference between stereo floating breeding and conventional floating breeding of flue - cured tobacco,experiment with different warming measureswas carried out,the effect to seedling emergence rate,seedling quality and benefit were compared.The result showed that the seedling emergence rate,seedling establishment rate,the root capratioandrootvolumeofwarmingnurserypondwere0.50%~2.50%,1.00%~3.50%,0.01 ~0.02 and4.60~ 9.30 mL higherthan that of non -warming nursery pond respectively.The above indexes in the superior stratum of the warming greenhouse were2.00%,2.50%,0.01 and4.70 mLhigherthanthatinthe sub-stratum.Warmingnurserypro- moted seedling growth,but average cost ofeach plate is 1.24 yuan higherthan that ofun-warming nursery. Keywords:flue-cured tobacco;floating breeding;seedling quality;cost [1]   漂浮育苗是烤烟生产较为重要的环节与技术措 重要的限制因子 。为了解决低温对漂浮育苗的
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