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第一代二化螟是本地的主害代,常规预测是通过剥查冬后残存基数和化蛹进度进行.由于二化螟越冬场所比较复杂,所以此种预测在发生期方面往往偏早,在发生量方面有时与实况差异较大.而诱蛾灯下一代二化螟的发蛾,不受越冬场所的影响,笔者通过对多年资料的分析,觉得较有规律,并初步得出一些结果,可供测报参考。一、基本情况本地(灯址在宜春市郊)1964～1966年、1971～1989年共22年的资料表明,一代二化螟灯下见蛾在4月中、下旬至5月下旬、6月初,平均历期38.4天;盛蛾高峰在4月底或5月上
The first generation of rice stem borers is the main generation of the local generation, the conventional prediction is through the pest survival check base and pupation progress .Because the overwintering place of the rice stem borer is more complex, so this prediction is often too early in the event, In terms of the amount of occurrence and the real difference between the larger and the moth moth next generation of striped stem hair moth, from the influence of overwintering places, the author through many years of data analysis, I feel more regular, and initially come to some results , For the newspaper reference. First, the basic situation of the local (light site in the suburbs of Yichun) 1964 ~ 1966, 1971 ~ 1989 a total of 22 years of data show that the next generation of Borer light see moths in mid-April, late to late May, early June, The average duration of 38.4 days; Sheng moth peak in late April or May