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植物保护
李润红*, 高娜, 孙永军 为了明确豆蚜与寄主黄芪的互作关系及机理,本研究在人工气候箱内培育黄芪幼苗至15~20 cm左右时,分别接入10日龄成蚜10、20、30头/株和40头/株,并以0头/株作为空白对照,在豆蚜持续取食2、4、6 d和8 d后,分别采集黄芪叶片,测定总叶绿素和营养物质的含量。结果表明,随着虫口密度的增加和取食时间的延长,黄芪叶片内总叶绿素和营养物质含量均发生变化...