赤眼蜂对玉米螟的防治效果研究

Study on Controlling Effect of T.chilonis to Corn Borer

摘要:

研究结果表明,赤眼蜂对夏玉米田的玉米螟具有显著的防治作用。放蜂区与对照区相比,玉米的虫口数、折秆数、被害株数3项指标的防治效果分别为5 0.8%、2 5.2%和36.2%。t检验的结果表明,防治效果极显著(t值分别为12.85^**、5.16^**和7.15^**);同时发现连片放蜂比非连片放蜂的效果更好,且二者差异显著(t值分别为2.82^*、3.98^*和7.0 2^**)。

Abstract:

Field experiment was conducted to examine the effect of T. chilonis in controlling corn borer.Results showed that T. chilonis has significant control effect to it.The number of bitten,breaking and damaged in experiment area,in comparison with CK,is reduced 50.8%, 25.2% and 36.2% respectively.The value of Lexatmination showed there exists significant differences between them（the value of tis 2.85^**, 5.16^** and 7.15^**, respectively）.Experiment also showed that continuous area of treat has more effect than discontinuous treat and there has significant difference between them （the value of tis 2.82^*,3.98^* and 7.02^** respectively）.In the end,we proposed that continuous area should be selected to gain good control effect.