【作者】 王文艺；

【导师】 肖铁光；

【作者基本信息】 湖南农业大学 ， 农业昆虫与害虫防治， 2006， 硕士

【摘要】 草地螟为害在我国北方地区比较严重，但近几年，在湖南省长沙地区的草坪也发现有草地螟的为害，为此，作者在长沙地区展开了对草坪草地螟的调查研究工作。 本文通过对草地螟(Loxostege sticticalis L．)的越冬过程、种群消长动态、生长发育情况以及环境因子对其生物学特性的影响细致调查研究，分析出草地螟危害在长沙地区发生的原因，并筛选出比较理想的防治药剂。主要结论如下： 1．草地螟在长沙地区草坪越冬基数很小，在长沙地区为害的多为外地迁入的虫源，为害程度主要取决于异地越冬代成虫迁入量的多少。 2．草地螟在长沙一年发生2代，有世代重叠现象，草地螟在草坪上的为害时间较集中，主要在6月下旬～8月下旬，长沙地区的气候条件适合草地螟的生长。 3．通过对长沙地区草地螟产卵情况、卵粒发育情况、幼虫取食习性及其抗寒能力、不同土壤湿度对草地螟蛹存活与羽化的影响和密度因子草地螟若干生物学特性影响的测定，分析长沙地区的环境条件与草地螟的生物学特性的关系，发现长沙的气候和环境都适合草地螟的生长发育。 4．选择4.5％高效氯氰菊酯乳油、高效Bt、敌百虫、8％敌敌畏乳油、氧化乐果和高效氟氯氰菊酯6种药剂进行筛选试验，发现4.5％高效氯氰菊酯乳油和敌百虫的防治效果很好。更多还原

【Abstract】 Meadow moth, Loxostege sticticalis L. (Lepidoptera: Pyralidae) is one of the most serious polyphagous insect pests in the north of China. But it happened in lawn in Changsha, Hunan province. To find out the occurring instance about meadow moth in lawn in Changsha, the investigations and researchs were carried through in the paper.The present paper summarized the rather systematical researchs on the over-winter meadow moth, the development and growth of meadow moth, the population dynamics and the environmental factors to the meadow moth, and the prevention and cure of meadow moth. Then, the reason of occurring and the development and growth of meadow moth were discussed in Changsha, and the relatively ideal pesticides were filtered from six deferent pesticides. The major progress obtained from these studies are summarized as follows:1. The over-winter cardinal number of meadow moth was very small in lawn in Changsha area, and they were a number of meadow moths coming from other places, not from the Changsha area. The occurring degree of meadow moth mostly rested with the quantity of meadow moths that come from other places.2. There were two generations every year, and the phenomena of generation superposition in Changsha. The time of breakage was comparatively mass, mostly between the last ten-day of a month of June with that of August. The climate of Changsha suited for the development and growth of meadow moth.3. On the basis of the survey of ovipositing, spawn growth , feeding behavior and the ability of fighting cold about larval meadow moth, the infection of survivance and eclosion of pupa of meadow moth by the deferent soil humidity, the mensuration of biological characteristic at the thing of their deferent density, we analyzed the relations of the environmental character of Changsha and the biological characteristic更多还原