摘要
暗黑齿爪鳃金龟幼虫危害花生的空间格局,为以个体群为基本成分的聚集格局。其幼虫虫口密度与花生总果荚数呈不显著负相关,与果荚被害率和为害指数均呈极显著正相关,为花生产量呈极显著负相关。由此组建了花生产量损失率的预测模式和花生生长期卵、幼虫防治指标模型。
The larva population of Holotrichia parallela Motschulsky in peanut fields exhibited an aggregated distribution.The density of the pest larvae showed an insginificant negative co(?)relation with total pod number of the crop,a highly significant positive correlation with the perecntage of pod injury and coefficient of injury and a highly significant negative cor- relation with peanut yield.Based on the data obtained,a mathematical model for the pre- diction of yield loss and a model for the control action threshold oF the eggs and larvae of H.parallela were established.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
1993年第2期50-54,共5页
Journal of Southwest University(Natural Science Edition)
基金
四川省科委<花生蛴螬优势种群发生
危害及防治技术研究>课题
关键词
虫口密度
空间分布
花生
产量
损失/暗黑齿爪鳃金龟
insect density
space distribution
arachis hypogaea
yield
losbes/Holotrichia parallela
