摘要
安全性测定结果发现:在供试的具有代表性的24个科,46种植物中,水葫芦象甲只危害水葫芦,不危害其他任何的当地植物.控制效益实验表明:象甲成虫可大量取食水葫芦叶片和叶柄及茎杆,明显降低植株光合作用;象甲幼虫钻蛀茎杆,致使茎杆变黄植株枯萎,甚至茎杆根部腐烂死亡;象甲可十分有效地降低水葫芦植株的繁殖速率(t＞0.01,差异十分显著);象甲还可明显抑制植株个体生长量(t＞0.01,差异十分显著);象甲对水葫芦株高和根长也能起到明显的抑制作用.象甲在昆明地区一年发生2～3代,卵,幼虫,蛹和成虫均可正常生长发育,高海拔并不影响象甲的自然生长.
46 kinds of plants belonged to 24 representative sections were used in experiment. The results show that Neocheting eichhorniae endangers the eichhornia crassipes only, do not endanger any other native plant; neocheting eichhorniae breeds 2 - 3 generations per year in Kunming. Spawn, larva, chrysalides and imago can grow up naturally, so the natural growth of neocheting eichhomiae would not be affected by high altitude in Kunming.
出处
《云南环境科学》
2005年第3期36-39,共4页
Yunnan Environmental Science
关键词
象甲
水葫芦
湖泊保护
滇池
neocheting eichhomiae
eichhornia crassipes
lake protection
Dianchi lake
