烤烟漂浮育苗水体增温技术的应用

为了解决烤烟育苗期低温制约，提高烤烟漂浮育苗的壮苗率，进行了烤烟漂浮育苗水体增温技术的应用研究。试验结果表明：采用水体增温技术，育苗池平均水温达到20.06℃，能提供烟苗生长的适宜温度，促进了烤烟种子出苗和烟苗的生长发育，缩短了育苗期12天，有利于提高烟苗素质，壮苗率达到86%，茎杆较为粗壮，茎高和茎围分别达到11.2 cm和1.8 cm，烟苗的根系较为发达，干物质积累较多；有利于大田期早生快发，株高、茎围、有效叶数及叶片的长、宽度均有不同程度的增加，有利于提高烟叶的产质量，产值增加1847.85元/hm2。但运行成本较高，有待于进一步完善设施。

Application of Water Warming Technology in Floating System for Tobacco Seeding

In order to solve the constraints of low temperature in flue-cured tobacco seedlings, improve the rate of tobacco seedling, the research of water warming technology in floating system for tobacco seeding was conducted. The results showed that, by water warming technology, seedling pond water temperature reached an average of 20.06℃, which can provide suitable temperature seedling growth, promote tobacco seed germination and seedling growth and development, shorten the seedling stage 12 days. It helped improve the quality of tobacco seedlings： the seedling rate reached 86%, more stout stem, stem height and girth reached 11.2 cm and 1.8 cm respectively, seedling root system more development, more dry matter accumulation ,which was good for tobacco seedling growing faster in field, and plant height, stem girth, effective leaf number and leaf length, width varying increased. It benefited to improve the yield and quality of tobacco, the yield was increased 1847.85 yuan per hm2. However, it needed higher operating costs, so more facilities were to be further improved.