摘要
通过１９９３和１９９４两年的田间调查，测定了玉米螟和桃蛀螟在玉米田间的生态位和种间竞争系数。结果表明：桃蛀螟已成为玉米的主要害虫之一。两虫在玉米上的时间、空间和营养生态位宽度、生态位重叠非常相近，其生态位相似性比例均大于０９０；在同一玉米部位两虫共存比例小于１０％，其种间竞争系数大于０９８％。说明两虫在玉米上的竞争激烈。
The niche and interspecific competition coefficient of corn borer (Ostrinia furnacalis) and peach borer (Dichocrocis punctiferalis) were estimated by means of the field investigating in 1993, 1994. The results showed: the peach borer has been one of the most important corn insect pest. The temporal, spatial and nutritive niche breadth and niche overlap of corn borer and peach borer are very similarities, their percentage similarity of niche are over 0.90. Their ratio of coexistence in same location of corn plant is less 10% and the interspecific competition coefficient are more than 0 98.
出处
《浙江农业学报》
CSCD
1995年第1期31-34,共4页
Acta Agriculturae Zhejiangensis
关键词
玉米
玉米螟
桃蛀螟
生态位
种间竞争
Corn borer
Peach borer
Niche
Interspecific competition
