磷酸二氢钾对野百合籽球生长及生理的影响

以野百合（Lilium brownii）籽球为试材，采用基质栽培，研究不同浓度磷酸二氢钾处理对野百合籽球生长及生理相关指标的影响。结果表明： 500～1 500 mg·L-1的磷酸二氢钾对野百合生长均有明显促进作用，能提高野百合叶绿素含量、根系活力，增加其籽球的可溶性蛋白、可溶性糖和淀粉含量。野百合生长的最适磷酸二氢钾浓度为1 500 mg·L-1，各指标与对照相比均达到了显著水平。其籽球重、根重、叶重分别比对照高66.29%，138.92%，71.17%；叶绿素含量、根系活力分别比对照高35.25%，198.10%；籽球的可溶性蛋白含量、可溶性糖含量和淀粉含量分别比对照高18.10%，40.81%，10.26%。

Effect of potassium dihydrogen phosphate on bulblet growth and physiological characters of Lilium brownii

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.