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生态学报 1984
EVALUATION OF THE EFECTIVENESS OF NATURAL ENEMIES
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Abstract:
The life table and Morris-Watt mathematical model were used as the methods to analysis the effectiveness of natural enemies of pest insects.Used in this paper is the M-value that if ther component "i" were absent, the index of population trend "I" would increase-by M(si) times as compared whth original index of population trend"I".According to the component analysis of the 1976-1981 year's average life table of the 2nd generation of Cnaphaloc-rocis medinalis Guenee, the M-value showed that the natural enemi...
