One of the experimental results indicated that different concentrations of two extracts inhibited the radicle and embryo growth of chloris virgata . different concentration of petroleum ether extract accelerated the germination of c . virgata l . at different extension 实验结果表明，瑞香狼毒叶石油醚和乙醇不同浓度的两种提取物对虎尾草种子胚根和胚芽的生长均有抑制。
There existed self - poison phenomenon and the ri was up to - 1 during the germination of s . chamaejasme when the concentration of petroleum ether extract was 20 gdw . ml - 1 . furthermore , different concentrations of ethanol extract inhibited the germination of lespedeza davurica 瑞香狼毒的自毒作用明显，其作用的主要成分是叶乙醇提取物，当浓度为20gdw ? 100ml ~ ( - 1 )时，完全抑制了瑞香狼毒种子的萌发，化感效应指数达到- 1 。
The flavonoids content in the vegetative organs of stellera chamaejasme l . was determined by ultrasonic extraction and spectrophotometry in songnen grassland of heilongjiang province , and the change of flavonoids content in root was analysed under different environmental conditions , such as different grazing intensities and soil water content 摘要采用超声提取和分光光度法，对黑龙江省松嫩草地瑞香狼毒营养器官总黄酮含量进行了测定，并对不同环境梯度下根的总黄酮含量变化进行了分析。
The radicle growth of oryza sativa was inhibited totally when the concentration of ethanol extract was or higher than 10gdw . ml - 1 . the corrective mortalities of acheta domestica and tenebrio molitor were higher than 50 % when the two extracts concentration exceeded 40gdw . ml - 1 , thereinto corrective mortality of t . molitor was 96 . 67 % under the effect of 40 and 80gdw . ml - 1 瑞香狼毒叶石油醚和乙醇提取物的浓度大于40mg ? ml ~ ( - 1 )时，对家蟋蟀和黄粉虫毒杀作用的校正死亡率均高于50 ，其中瑞香狼毒叶乙醇提取物浓度为40和80mg ? ml ~ ( - 1 )时，黄粉虫的校正死亡率最高，达到96
On one hand , the allelopathy caused by petroleum ether and ethanol extracts of s . chamaejasme leaves on the other plants germination was investigated , on the other hand , the inhibition of the 2 extracts on insects and pathogenic microorganism of crop were tested . the aim of these studies is to provide empirical foundation for the development of a new botanic pesticide 本文从化感作用的角度出发，研究了瑞香狼毒叶石油醚和乙醇两种提取物对植物种子萌发的影响，同时研究了两种提取物对作物病原菌和昆虫生长的抑制作用，目的在于揭示瑞香狼毒叶是否具有化感作用，并为一种新的植物源农药的开发提供实验依据。
