摘要
】在２６℃恒温和１２／１２光照下，用白背飞虱低龄若虫喂养，组建了尖钩宽黾蝽的实验种群生命表，并计算出有关种群生命表的各项参数。结果表明，净繁殖率Ｒ＝３．７１９７，世代平均历期Ｔ＝２０．１３７４ｄ，内禀增长率ｒｍ＝０．０６５２，周限增长速率λ＝１．０６７４，种群增长１倍时间ＤＴ＝１０．６２６２ｄ，瞬时出生率ｂ＝０．１１５７，瞬时死亡率ｄ＝０．０５０５。稳定年龄组配，成虫前期占９１．９１０２％，成虫期占８．０８９８％。
This paper dealt with studies on life table of experiment population of Microvelia horvathi Lundblad at 26±1℃ and a light regime of 12 L∶12D. The results showed that population parameters of this natural enemy were calculated as following: net reproduction rate ( R 0=3.7197), generation time ( T =20.1374), innate capacity of population increase ( r m =0.0652), finite rate of increase (λ=1.0674), instantaneous rate of birth and death ( b =0.1157, d =0.0505). Stable age distribution showed that 91.9102% of this population was egg stage and nymph stage, 8.0898% was adult stage. The population of this natural enemy under the condition mentioned above would increase by one fold in 10.6262 days. These results would give theoretic basis of evaluating and utilizing of M.horvathi for controlling effects to rice hoppers.
出处
《西南农业大学学报（自然科学版）》
CSCD
1998年第5期472-477,共6页
Journal of Southwest Agricultural University
基金
"九五"国家重大科技攻关计划资助
浙江省自然科学基金
亚洲发展银行(ADB)生物多样性项目
关键词
尖钩宽黾蝽
实验种群
生命表
稻飞虱
Microvelia horvathi
experiment-population
life table
