《Table 4 Stem height of tobacco seedlings in various distiller's grain sub-strates》

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《Effects of Distiller's Grain Substrate with Acid Regulation on the Growth of Tobacco Seedlings in Floating Breeding System》

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cm

Seen from Table 4，there were small differences between various treatment in the stem height of tobacco seedlings 30 days after sowing.30-40 days after sowing，there were certain differences between various treatments in the stem height of tobacco seedlings，and the height difference between various treatments was up to about 3 cm，the increase in the stem height of tobacco seedlings was the least in treatment CK1.40-50 days after sowing，the increase in the stem height of tobacco seedlings was the largest in different treatments.With the increase of humic acid dosage in treatments A，B and C，the stem height of tobacco seedlings increased.It declined obviously in treatment D.To sum up，tobacco seedlings in treatments C and CK2grew fastest，while the stem height of tobacco seedlings was the lowest in treatment CK1.