调查地点

Investigation sites

瓦房店

Wafangdian

开原

Kaiyuan

双城

Shuangcheng

肇东

Zhaodong

雌穗被害率(%)

Damage rate for ear (%)

74.0

100.0

86.7

98.0

百株虫量(头)

Pest quantity per one hundred maize (single)

77.3

528.0

123.3

204.6

百株蛀茎孔数(个)

Holes per one hundred maize (single)

144.6

696.0

219.3

420.0