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培育漂浮小壮苗是烤烟膜下小苗移栽技术推广成功的基础,炼苗是培育小壮苗的关键技术之一。炼苗,除采取间断断水、断肥方法外,还可通过调控光照度来进行。根据烟苗不同生长阶段对光照需求特点,调控遮阳网遮盖度,控制光照度,既利于烟苗有机物质的大量合成,又利于协调根、茎、叶的生长,使烟苗向着小壮苗的方向发展。
Cultivation of small floating seedlings is under the flue-cured tobacco seedling transplanting technology to promote the success of the foundation, hardening is one of the key technologies to cultivate small strong seedlings. Lian Miao, in addition to intermittent water, fat method, but also by adjusting the light intensity to carry out. According to the different growth stages of tobacco seedlings on the characteristics of the demand for light, shade control coverage, control of light intensity, is conducive to a large number of organic synthesis of tobacco seedlings, but also conducive to the coordination of root, stem and leaf growth, development of.