地上部植食者褐飞虱对不同水稻品种土壤线虫群落的影响

被引:15
作者
刘满强 [1 ]
黄菁华 [1 ]
陈小云 [1 ]
王峰 [1 ]
葛成 [2 ]
苏昱 [1 ]
邵波 [3 ]
汤英 [1 ]
李辉信 [1 ]
胡锋 [1 ]
机构
[1] 南京农业大学资源与环境科学学院土壤生态实验室
[2] 南京农业大学植物保护学院
[3] 南京农业大学农学院
关键词
地上部和地下部; 感虫/抗虫品种; 线虫群落; 营养类群;
D O I
暂无
中图分类号
S435.11 [稻病虫害];
学科分类号
090401 ; 090402 ;
摘要
地上和地下部生物群落的交互作用对于调控陆地生态过程具有重要作用。在盆栽条件下利用2×2析因设计研究了褐飞虱(Nilaparvata lugens)取食不同水稻品种后对土壤线虫群落的影响。结果表明,褐飞虱侵害水稻9d后,感虫品种(广四和汕优63)的土壤线虫总数、属数及自生线虫(食细菌线虫、食真菌线虫和捕食性线虫)数量增加,并且一般达到显著水平(P<0.05);而上述指标在抗虫品种(汕优559和IR36)土壤中则呈现相反的趋势。植食性线虫数量在强感虫品种广四上显著增加(P<0.05),而在强抗虫品种IR36上显著减少(P<0.05)。褐飞虱和水稻品种对土壤线虫的生态指数(线虫通道指数、Shannon-Wiener指数、成熟度指数、富集指数和结构指数)没有明显影响,可能与供试土壤线虫群落组成单一及褐飞虱作用时间较短有关。总之,褐飞虱强烈影响土壤线虫数量、群落组成和营养结构,并且作用的方向(促进或抑制)和程度依赖于水稻的品种特性,揭示出地上部植食者的短期侵害将对稻田土壤生态系统的结构和功能产生深远影响。
引用
收藏
页码:431 / 439
页数:9
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