拉缘蝽为害对卵叶小蜡营养物质的影响

通过对受拉缘蝽不同程度为害的卵叶小蜡叶片中可溶性糖、总糖含量的测定,结果表明：不同受害程度下卵叶小蜡叶片中可溶性糖、总糖含量差异是显著的,随着受害程度的加重,呈现出先明显降低,而后又略增加的波动变化.不同受害程度下卵叶小蜡叶片中Mg、Cu、Ca、N、P含量的变化不大,说明拉缘蝽的为害对卵叶小蜡叶片中这些营养元素没有显著影响.但叶片K、Mn元素含量与虫害的危害程度之间存在线性相关关系,受害越严重,叶片中Mn、K元素含量越高.

Influence of the harm of Rhamnimia dubia on the nutrient substance of Ligustrum sinense

By measuring the content of the soluble sugar,total sugar,Mg,Cu,Ca,N,P,K,Mn in the leaves of Chinese privet(Ligustrum sinense Lour) which was harmed by stinkbug Rhamnimia dubia(Hsiao),it has been proved that there was a significant difference in the content of soluble sugar and total sugar in the leaves of Chinese privet under different damages.With the increase of the damage, the content of sugars decreased sharply and then increased a little.The change of the content of Mg,Cu,Ca,N,P in the leaves of Chinese privet,which was harmed by the stinkbug at various degrees,was insignificant,which showed that the harm of stinkbug had no remarkable effect on the content of these nutrient elements.But the content of element K and Mn in the leaves of Chinese privet had linear correlation with the damaged degree of the pest.The more seriously the Chinese privet damaged,the higher the content of element Mn and K in the leaves had.