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都匀烟区植烟土壤PH值范围为4.11~7.78,PH<5.50的占土样总数59.80%,PH5.50~6.50的占20.70%,PH6.50~7.50的占14.60%,PH>7.50的占4.90%。PH≤5.00的占36.50%,强酸性土壤较多,影响烟叶质量的进一步提高[1],在本实验采用大区设计,施用白云石粉量为cK(不施白云石粉)100㎏/667㎡、200㎏/667㎡、300㎏/667㎡,测烤烟不同时期土壤PH值的变化,为白云石粉在都匀烟区的合理施用、提升烟叶质量提供理论依据。
The soil PH value ranged from 4.11 to 7.78 in Duyun tobacco growing area, accounting for 59.80% of the total soil samples with pH <5.50, 20.70% with PH5.50 ~ 6.50, 14.60% with PH6.50 ~ 7.50 and PH> 7.50 Accounting for 4.90%. PH≤5.00 accounted for 36.50%, strong acid soil more, affecting the further improvement of tobacco quality [1], in this experiment using a large area design, the application of dolomite powder cK (without dolomite) 100 ㎏ / 667 ㎡, 200 ㎏ / 667 ㎡, 300 ㎏ / 667 ㎡, measuring the change of soil PH value in different periods of flue-cured tobacco, providing the theoretical basis for the reasonable application of dolomite powder in Duyun tobacco area and improving the quality of tobacco leaves.