两种斯氏线虫对根象甲 Diaprepes abbreviatus 的防治效果比较。
Comparison of Two Steinernematid Species for Control of the Root Weevil Diaprepes abbreviatus.
作者信息
Schroeder W J
出版信息
J Nematol. 1994 Sep;26(3):360-2.
Steinernema carpocapsae Weiser All strain was compared to Steinernema riobravis Cabanillas, Poinar, and Raulston for control of the root weevil, Diaprepes abbreviatus (L.), in the laboratory and in potted citrus. In the laboratory bioassay, D. abbreviatus larvae were exposed to 30, 60, and 120 nematodes/cm(3) in sand. Insect mortality 1 week after application was greater (P </= 0.05) for S. riobravis than for S. carpocapsae in the laboratory bioassay. In the greenhouse bioassay, D. abbreviatus larvae were exposed to 3 and 9 nematodes per cm(3) of soil in potted citrus. Again, at each rate, mortality was greater (P </= 0.05) in pots treated with S. riobravis than in pots treated with S. carpocapsae. The results of this study suggest that S. riobravis is a better biological control agent against D. abbreviatus larvae in potted plants than S. carpocapsae.
在实验室和盆栽柑橘中，将斯氏线虫属的小卷蛾斯氏线虫（Steinernema carpocapsae）Weiser All品系与里奥布拉维斯斯氏线虫（Steinernema riobravis）Cabanillas、Poinar和Raulston进行比较，以防治根象甲——柑橘爆皮虫（Diaprepes abbreviatus (L.)）。在实验室生物测定中，将柑橘爆皮虫幼虫置于含30、60和120条线虫/立方厘米的沙子中。在实验室生物测定中，施用线虫1周后，里奥布拉维斯斯氏线虫导致的昆虫死亡率高于（P≤0.05）小卷蛾斯氏线虫。在温室生物测定中，将柑橘爆皮虫幼虫置于盆栽柑橘中每立方厘米土壤含3条和9条线虫的环境下。同样，在每个线虫施用率下，用里奥布拉维斯斯氏线虫处理的花盆中的死亡率高于（P≤0.05）用小卷蛾斯氏线虫处理的花盆。本研究结果表明，在盆栽植物中，里奥布拉维斯斯氏线虫比小卷蛾斯氏线虫更适合作为防治柑橘爆皮虫幼虫的生物防治剂。
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