论文部分内容阅读
一、与地形的关系麦穗夜蛾在乌盟察右中旗大多数麦田都有发生,但在西南丘陵山区的金盆、乌兰等七个公社的山谷盆地较为严重。这些公社的四周有高山、丘陵为自然屏障,天气较暖和,小气候较好,有利于麦穗夜蛾栖息越冬,所以成为麦穗夜蛾猖獗区。其它地区海拔较高,又无屏障,风大干燥,冷暖变化无常,不利于麦穗夜蛾栖息越冬,所以种群
First, the relationship with the terrain Spodoptera litura in the Wusunzuo Youzhongqi most of the wheat fields have occurred, but in the southwestern hills and hilly areas Jinpen, Ulan and other communes of the valley basin is more serious. These communes surrounded by mountains, hills as a natural barrier, the weather is warmer, microclimate is better, is conducive to the survival of the wheat thorn moths overwintering, it becomes a rampant area of the worm. Elsewhere higher altitude, no barrier, the wind was dry, warm and volatile changes, is not conducive to the winter moth habitat overwintering, so the population