《Table 2 Emergence of tobacco seedlings in different distiller's grain substrates》

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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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*indicates P<0.05，and the difference was statistically significant.

Seen from Table 2，the emergence rate of tobacco seedlings in treatment C exceeded that of tobacco seedlings growing in the commodity substrate（CK2），while the emergence rate of tobacco seedlings in other treatments was lower.It is seen that there was no relationship between the emergence rate of tobacco seedlings and humic acid dosage.The rate of strong tobacco seedlings in treatment C was slightly lower that of tobacco seedlings growing in the commodity substrate，and the rate of strong tobacco seedlings in treatment CK1was the lowest.The rate of strong tobacco seedlings in the first three treatments A，B and C increased gradually but decreased in the fourth treatment D，because humic acid might be excessive.The number of seedling days in treatments A，B，C and D increased firstly and then reduced，lower than that of treatment CK1and higher than that of treatment CK2.In terms of growth vigor，tobacco seedlings in treatments C and CK2grew more luxuriantly than that in other treatments.