The result indicates that photosynthesis and the cell liquid density of tobacco are both seriously influenced by soil water content, and that photosynthesis is the most vigorous when the lower limit of soil water content is 75% of water holding capacity o
The result indicates that photosynthesis and the cell liquid density of tobacco are both seriously influenced by soil water content, and that photosynthesis is the most vigorous when the lower limit of soil water content is 75% of water holding capacity o
试验结果表明：烟草光合作用受土壤水分影响较大，当旺长期土壤含水量控制下限为田间持水量的75%时，光合作用最强；细胞液浓度的变化受土壤含水量影响亦较大。