摘要
甘蔗斑点象是云南甘蔗上另五一种新的严重蛀食地下蔗头的害虫，主要以幼虫在甘蔗地下蔗头内为害，为害期８－９个月，受害蔗每６６６．７ｍ＾２减少０．５－０．３ ｔ，并缩短了宿根年限。此虫１年发生１代，无越冬现象，有喜湿性，不能飞翔，主要通过沟河流水传播。
This study was conducted mainly in jingdong County, Yunnan province, during 1992-1995. Diocalandra sp. is other soil-inhabiting pest to the sugarcane stumps in yunnan. The date obtained from both laboratory obeervations and field survey show that the weevil passes one grneration a year. The biological characteristies and behaviour of the different slages were closely describel. Practice crop rotation between surgarcane and rice, aviod keeping two -year old rhizom of raton and pratice ploughng out them to be burued up in February -May ctc.By applying 3% miral or 3% isofcnphos-mcthyl 4kg /666.7m2 when loosen the soil and hill up, the efficency reached about 90%.
出处
《昆虫知识》
CSCD
1996年第6期432-435,共4页
Entomological Knowledge
