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通过2012年在麦红吸浆虫发生田对小麦不同生育期进行套袋保护,明确了小麦抽穗期为麦红吸浆虫侵害的敏感期。采用生态位重叠率的计算方法,统计2012—2013年不同品种的抽穗期与麦红吸浆虫发生期的同步性,结果表明,同步性越高,产量损失越重,具有显著的相关关系。同时,品种抽穗期的成虫累计发生量与产量损失有显著的相关性。成虫发生期与抽穗期同步或吻合导致小麦受害而不是扬花期,所以在缺乏抗虫品种的情况下,应采取抽穗期化学保护进行防治。
By 2012, wheat paddy field occurred in different stages of wheat bagging protection, clear wheat heading stage for the infection of wheat midges the sensitive period. Using the method of calculating the niche overlapping rate, the synchronization between the heading date of 2012 and 2013 and the occurrence stage of Midazolam was calculated. The results showed that the higher the synchronization and the heavier the yield loss, the more significant the correlation was. At the same time, there was a significant correlation between the cumulative occurrence of adult and the yield loss at the heading stage. Synchronization or anomaly of the adult and heading stages results in wheat damage rather than flowering, so in the absence of insect-resistant varieties, chemical protection at heading should be used for control.