摘要
本文研究了桃小食心虫的生物学和生态学特性。结果表明:桃小食心虫在四川西部1年发生1代;越冬幼虫出土数量与前旬降雨量呈正相关;幼虫出土至羽化的历期与温度呈负相关。并推导出了成虫初见日与5月份温雨系数的直线回归方程式。幻虫在果内的成活率随果实膨大而增加。幼虫危害苹果的空间分布型属典型的聚集分布。其聚集强度是:低密度,高聚集;高密度,低聚集。本文还研究了防治桃小食心虫的方法。
This paper deals with the biological and ecological character of thepeach fruit moth.The insect undergoes one generation a year in WesternSichuan.There is a positive correlation between the emergence of thehibernating larva from the soil and that of the rainfall in the first ten-days of a month.But a negative correlation between the duration fromlarva to adult and the temperature.So we can get the linear regeressionequation about the date of the first appearance of adults and the tempe-rature-rainfall coefficient in May.The survival rate of larvae in fruitincrease with the enlergememt of the fruit.The space dispersion of thepopulation of the peach fruit moth is a typical aggregatad dispersion inapple trees.The aggregated intenaities were high density with pooraggregation and poor density with strong aggregation in July to Septem-ber.This paper also reports the control method and the effect of largescale demonstration in Western Sichuan.
出处
《西南农业大学学报（自然科学版）》
CSCD
1990年第2期155-160,共6页
Journal of Southwest Agricultural University
基金
四川省科委"七五"重点课题<四川三州苹果主要病虫综合治理技术研究>的研究内容之一.
关键词
桃小食心虫
发生规律
防治
苹果园
peach fruit moth
regularity of outbreak
biological characters
space dispersion
control
