论文部分内容阅读
随着双季稻面积的不断扩大,在我省部分地区稻蓟马的为害有所发展,常因其为害,造成秧苗枯死或坐蔸,导致翻耕重裁。为害情况四川为害水稻的蓟马主要有稻蓟马和稻管蓟马两种。秧田期和本田分蘖至圆秆期,基本上是稻蓟马为害,抽穗开花期多为稻管蓟马。稻蓟马的成虫及若虫,都群集心叶或纵卷的叶尖刺吸汁液,受害部位初现黄白小点,以后呈不规则大斑,叶尖纵卷,叶色变黄,心叶灰白色,生长停滞。中、晚稻秧田和中稻本田受害最重。受害重的秧田,远看一片枯黄。返青分蘗期受害的,坐蔸不发。
As the area of double cropping rice continues to expand, the damage of the rice thrips has been developed in some areas of our province, often resulting in damage to the seedlings or death. Harm situation Thrips of rice damage in Sichuan are mainly two kinds of rice thrips and rice thrips. Seedling field and Honda tillering to the round stems, is basically the damage of rice thrips, heading and flowering mostly rice thrips. The adult and nymphs of the rice thrips all cluster leaf tips or curled tips to suck the juice. The affected parts initially appear yellowish-white dots, irregular large spots appear later, the leaf tips curl, the leaves turn yellow, the leaves are gray-white , Growth stagnated. Medium and late rice seedling and mid-crop Honda hardest hit. Heavy seedling, far look at a yellow. Turning green tillering victims, sit still hair.