利用信息化合物诱捕防治云南切梢小蠹试验效果分析

Test Effect of Semiochemicals on Trapping of Tomicus yunnanensis

利用信息素在松小蠹虫扬飞期开展诱捕防治是较为普遍且安全有效的一种防治措施,不同配方的信息素在相同的林间环境中诱捕效果有所不同。采用3种配方的信息素在云南省玉溪市红塔山自然保护区相同林间要素下进行云南切梢小蠹Tomicus yunnanensis诱捕防治试验。结果表明,采用3种信息化合物进行试捕后,试验林分内的虫口密度明显降低,平均有虫株率由诱捕前的65.25%降低到26.88%。其中,各种配方单独使用的情况下,试验O配方小蠹虫信息化合物诱虫量最多,占总数的49.31%,其次是O^+配方、O^(++)配方;3种配方混合使用诱捕效果不太理想。

It＇s one of the safe and effective prevention and control measures to trap flying Tomicus yunnanensis by semiochemicals. Different components of semiochemicals had various effects on trapping in the same forest environment. This paper used 3 kinds of semiochemicals to test the trapping effects of Tomicus yunnanensis in the same forest environment of Hongtashan Nature Reserve. The results showed that the density of the insect population in the test forest decreased significantly,and the average number of insect strains decreased from 65. 25% to 26. 88%. The trapping number of Tomicus yunnanensis was largest with the exclusive use of O formula,accounting for 49. 31%,followed by O.^＋ formula and O^＋ ＋ formula. The mixture effect of three formulas was not ideal.