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利用新疆北部地区黑光灯下黄地老虎越(Agrotis segetum)冬代种群数据(1992~2001年),分析了越冬代种群数量与冬季积雪最大厚度和天数的关系。结果表明,黄地老虎越冬代发蛾的时间为4月30日~6月15日,越冬代种群数量年际间存在很大波动性。黄地老虎越冬代种群数量与当年度覆雪天数(1月1日~4月初)呈显著负相关(R2=0.6022,P<0.0083),而与冬季最大积雪厚度(R2=0.23,P=0.1577)和秋冬季(11月~翌年4月)积雪天数(R2=0.099,P<0.3748)相关不显著。当年度覆雪天数可以作为黄地老虎预测中的一项重要的参考指标。
Based on the population data of winter Agrotis segetum from black light in northern Xinjiang from 1992 to 2001, the relationship between the number of overwintering population and the maximum snow thickness and days in winter was analyzed. The results showed that the yellow tiger overwintering on behalf of moths from April 30 to June 15, the winter population there is a great fluctuation in the number of years. There was a significant negative correlation between the number of overwintering population and the number of days of snow cover in the year (January 1 ~ April) (R2 = 0.6022, P <0.0083), but not with winter maximum snow cover (R2 = 0.23, P = 0.1577) and autumn and winter (November - April) snow days (R2 = 0.099, P <0.3748). The number of days of snow cover in the year can be used as an important reference index in the prediction of yellow tigers.