Studies on Vertical Migration of Rice Leaf Roller in the Mountain Area

This paper dealt with the results in the study and practical demonstration of vertical migration of rice leaf roller in the mountain area over the past 10 years. The phenomenon of vertical migration, or flying upward along the mountain in July and flying downward in August, was further verified by five aspects. The principle of forecast in the vertical migration or at the different height with the middle and small measure, as well as the effect of the combined control were also presented.