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Floating shed tobacco seedling sowing date

Dry) weight correlation coefficient of 0.86 and 0.85. Show that the accumulated temperature, the increase in effective temperature is conducive to improving the quality of tobacco seedlings. 2 months, late planting can ensure a higher seedling growth and development activities needed to accumulated temperature and effective temperature,[link widoczny dla zalogowanych], but also cultivate tobacco seedlings for planting; January sowing, seedling length, Big Tobacco; March sowing , Tobacco small, poor quality. Comprehensive analysis: 2 months, late for the hut floating system tobacco area in central Guizhou optimal sowing. At this point the quality of tobacco seedlings were as follows: seedbed of 70 ~ 80d, stem height 6 ~ 7CIqL1, maximum leaf area of 90 ~ 1O0Cnl,[link widoczny dla zalogowanych], plant fresh weight 10 ~ 12g. Dry weight of 0.9 ~ 1.0g, timely field for transplanting. 3.2 Substrate floating seedbed is black insulation material composition. Seedling tray plastic foam insulation is also the original families, to improve the seedbed temperature also plays a very important role, precisely because of nursery seedling tray with the particularity of the media, determine the temperature condition of a conventional seedbed seedlings Ma are very different. 70 ~ 80d of the shed into a seedling time, with less than 2 months abroad seedling time a certain distance,[link widoczny dla zalogowanych], which is mainly due to early breeding shed seedbed temperature is too low, the time from sowing to emergence due in a month or more. If you change the shed to shed, or germination planting, shorten emergence time, seedling will not only shorten the time,[link widoczny dla zalogowanych], and can use more time for leaf-cutting, forging seedlings, etc., which will help to further improve seedling quality cable. Fully reflects the kind of breeding superior new technology. [
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