摘要
研究了萧氏松茎象幼虫的位置与流脂孔的方位关系。结果表明,第一代和第二代幼虫的位置与流脂孔的方位关系在不同方位的比例差异均达到极显著水平。其中,幼虫位于流脂孔下方的比例最高,第一代和第二代幼虫的比例分别接近30%和40%。位于上方、左上和右上方的比较较低,只有5%左右。
To find out the relationship between azimuth of Hylobitelus xiaoi larvae and resin exits of Pinus elliottii,seven plots of pines were investigated.The results showed that the ratios of Hylobitelus xiaoi larvae were significant differences among eight azimuths between the pest and resin exits of Pinus elliottii both the old-age and new-age larvae.The ratios of the old-age and new-age larvae were about 30% and 40% which were highest when pests were below the resin exits.When the pests were above the resin exits,the ratios of two types of larvae were about only 5%.
出处
《江西植保》
2010年第4期169-171,共3页
Jiangxi Plant Protection
基金
江西省科委攻关项目
关键词
萧氏松茎象
流脂孔
方位
Hylobitelus xiaoi
resin exits
azimuth
