Studies on the Spatial Distribution of Larva and Pupae of Cerodontha denticornis Panzer in Wheat Field

doi:10.3321/j.issn:1000-7091.2005.01.021

Abstract

Abstract: The damage of Cerodonta denticornis to wheat has increased in recent years. In order to find out its behavior and the correct sampling method,its population density in 8 wheat varieties was investigated during the damage peak and spatial distribution of larva and pupae in wheat field was analyzed with some aggregation indexes, Taylor}s power principle and m^*-m regression equation. The results showed that the highest population density was in the field of variety Xuzhou 26,but in the field of variety Jinan 17,the pest had the lowest density. In early May, the larva and pupae revealed uniform distribution.

Key words: Cerodonta denticornis Panzer, Larva, Pupae, Spatial Distribution, Wheat

CLC Number:

S433

GUO Xian-ru, ZHANG Jian-she, SUN Shu-jun, WANG Wei. Studies on the Spatial Distribution of Larva and Pupae of Cerodontha denticornis Panzer in Wheat Field[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2005, 20(1): 86-88. doi: 10.3321/j.issn:1000-7091.2005.01.021.

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