为确定烟草的适度亏水效应及烟草水分生理灌溉指标，进行了烟草蒸渗仪试验，通过控制土壤水分下限研究烟草的适度亏水效应。

Experimental study was performed to determine the moderate water deficit effect and physiological irrigation index of tobacco with lysimeters by controlling the lower limit of soil water content.

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伸根期是烟草根系生长的关键时期，进行适度的调亏灌溉，可以促进烟草的扎根深度；

Root-extended period is the key period of root growing, moderate deficit irrigation can boost the depth of root;

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