小麦禾谷缢管蚜的危害损失和防治指标研究  

Studies on the damage loss and the economic threshold of Rhopalosiphum padi (Linnaeus) in wheat

作　　者：郭良珍[1] 刘绍友[2] 苏丽 

机构地区：[1]广东省湛江海洋大学农学院,湛江524088 [2]西北农业大学植保系,陕西杨凌712100

出　　处：《植物保护》2000年第6期12-14,共3页Plant Protection

摘　　要：禾谷缢管蚜种群数量和危害历期是造成小麦产量损失的主要因素。采用累积虫日作为危害量指标 ,建立了蚜虫危害量与小麦产量损失的回归模型 ,即Y1=1 42 5 0 + 5 35 2 9× 10 -4 X1,Y2 =1 1780 + 0 0 10 6X2 。The population number and infecting period of Rhopalo siphum padi in wheat as an index were studied. Based on cumulative insectdays, the regression model between infection quantity of the aphid and ratio of yield loss at different stage was established, that was, Y 1=1 425 0+5 352 9×10 -4 X 1,Y 2=1 178 0+0 010 6 X 2. The dynamics economic threshold was proposed.

关 键 词：禾谷缢管蚜 小麦 危害损失 防治指标 

分 类 号：S435.122.2[农业科学—农业昆虫与害虫防治]