西花蓟马在切花月季上的种群动态

Population Dynamics of Frankliniella occidentalis on Cut Rose

为了摸清切花月季上西花蓟马的发生规律及危害,为生产上防治西花蓟马提供参考,利用粘虫板监测了西花蓟马在切花月季上的种群数量,探讨了不同开放度花朵上西花蓟马的数量差异,分析粘虫板上的相对数量与花朵中的绝对数量的相关性。结果表明,西花蓟马以春季及初夏发生数量最多,其次是秋季,盛夏时期相对较少,秋末及冬季田间西花蓟马种群大幅减少,仅在气温明显升高时有所反弹,但并不持久。不同开放度的花朵上西花蓟马的数量有很大的差异,4~5度比1~3度花朵上数量明显增多。西花蓟马的相对种群数量和绝对数量之间存在着明显的正相关关系,可根据粘虫板上着虫数推断花中的若虫数、成虫数以及总虫数。

The population dynamics of F.occidentalis on cut rose were investigated using sticky card,the numbers of F.occidentalis on different opening levels of flowers were investigated,and the relationship of relative number on stick card and absolute number on flowers were studied to explore the occurrence rule and damage of F.occidentalis on cut rose and provide a reference for prevention and cure of them.The results showed that the population of F.occidentalis was the highest in spring and early summer.It was relatively lower during the midsummer.The number became higher in autumn,but did not reach the level in spring and early summer.The population decreased greatly in late autumn and winter,the populations increased little when temperature rose,but it could not last for a long time.The number of F.occidentalis was significantly different on different opening levels of flowers.As the opening level of flowers increased,the total number of F.occidentalis increased too.There was more F.occidentalis on 4~5 opening level of flowers than 1~3 opening level of flowers.There was a clear positive correlation between the relative number on sticky card and absolute number in flower.The number of nymph,adult,total of F.occidentalis on flower could be obtained according the number of F.occidentalis on sticky colored card.