关键词: 磷酸二氢钾, 野百合, 籽球, 生理特性

Abstract: With the bulblets of Lilium brownii as materials， the effect of potassium dihydrogen phosphate with different concentrations on various morphological and physiological characters of bulblets of L.brownii in soilless substrate culture was studied. The results showed that the concentration of potassium dihydrogen phosphate of 500-1 500 mg·L-1 obviously promoted the growth of L.brownii， while improving its chlorophyll content， root activity， soluble protein， soluble sugar and starch contents. The optimum concentration of potassium dihydrogen phosphate for L.brownii growth was 1 500 mg·L-1. The bulblet weight， root weight， leaf weight was 66。29%， 138。92%， 71。17% higher than the control， respectively; and the chlorophyll content， root activity was 35。25%， 198。10% higher than the control. The soluble protein content， soluble sugar content and starch content of bulblets was 18。10%， 40。81% and 10。26% higher than the control， respectively.

Key words: potassium dihydrogen phosphate, Lilium brownii, bulblets, physiological characters