论文部分内容阅读
在湖南,根据实地饲养和利用有效积温(张孝羲,1979)推算,小地老虎发生代数,在湘西凤凰为4.3代,湘东长沙为5代,湘南郴州为5.4代。种群的季节消长型为斜坡型,如据常德1977～1984年8年黑光灯诱蛾资料,3,4(越冬代)、6(1代)、7(2代)、8(3代)及9～10(4代)月各月蛾峰日蛾量常年平均值分别为75.3、81.1、101.5、4.0、7.3及7.6头,故以越冬代蛾量最多,共156.4头。越冬代蛾常年有2个明显蛾峰,分别在3月中旬(少数年份在3月下旬)及4月上旬(少数年份在3月底)。湖南每年种植烟草100
In Hunan, according to the field feeding and utilization of effective accumulated temperature (Zhang Xiaoxi, 1979), the generation of Landrace occurs in 4.3 generations in Phoenix, 5 generations in Changsha, and 5.4 generations in Chennan, Hunan. According to the data of 8 years of black light trap in Changde from 1977 to 1984, 3 (overwintering), 6 (1), 7 (2), 8 (3) and The perennial average moth moth population from September to October (4th generation) was 75.3, 81.1, 101.5, 4.0, 7.3 and 7.6, respectively. Overwintering moth perennial has two obvious moth peak, respectively, in mid-March (a few years in late March) and early April (a few years at the end of March). Hunan grow tobacco 100 each year