【摘要】 以22种常见植物为研究对象,采用浸渍法,研究了植物乙醇粗提物对猕猴桃根结线虫2龄幼虫（J2）室内活性的影响,并开展了蕺菜、万寿菊和蓖麻粗提物对猕猴桃根结线虫的田间防效试验,以期为猕猴桃根结线虫绿色防控提供参考依据。结果表明:22种植物粗提物对猕猴桃根结线虫2龄幼虫均有不同程度的毒杀活性,其中,以蕺菜、万寿菊和蓖麻粗提物对J2的毒杀活性最佳,48 h后的校正死亡率分别为88.54%、90.97%和87.50%,LC₅₀值分别为2.711、3.096、3.679 g·L^-1;用药180 d后,万寿菊和蕺菜粗提物的田间防效分别为63.01%和54.79%,与药剂对照无显著差异,蓖麻粗提物的田间防效为41.10%,与空白对照差异显著。万寿菊、蕺菜和蓖麻粗提物均可作为防治猕猴桃根结线虫的绿色药剂。更多还原

【Abstract】 Taking 22 common plants as the research objects, the effects of ethanol extracts on the indoor activity of the second juvenile（J2） of kiwifruit root-knot nematodes were studied by impregnation method, and the field efficacy trials of Houttuynia cordata,Tagetes erecta and Ricinus communis on kiwifruit root-knot nematodes were tested, in order to provide reference for green control of kiwifruit root-knot nematodes.The results showed that all of plant extracts had different degrees of toxicity to J2,among them, the extracts of H.cordata,T.erecta and R.communis had good toxicity to J2.After 48 hours, the corrected mortalities of J2 were 88.54%,90.97% and 87.50%,and with LC₅₀ were 2.711,3.096 g·L^-1 and 3.679 g·L^-1 respectively.After 180 days, the field efficacy of T.erecta and H.cordata were 63.01% and 54.79%,respectively, which had no significant difference with the chemical control, while R.communis was 41.10%,which was significantly different from the blank control.The extracts of H.cordata,T.erecta and R.communis can be choosed as green chemicals to control kiwifruit root-knot nematodes.更多还原