| 褐飞虱自然种群生命表的初步研究 |
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| 引用本文： | 萧铁光,陈常铭. 褐飞虱自然种群生命表的初步研究[J]. 湖南农业大学学报(自然科学版), 1992, 0(4) |
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| 作者姓名： | 萧铁光 陈常铭 |
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| 作者单位： | 湖南农学院植物保护系，湖南农学院植物保护系 长沙，410128，长沙，410128 |
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| 摘 要： | 根据1986和1987年在长沙地区对褐飞虱(Nilaparvata lugens Stol)8个世代的自然种群数量变动的观察结果,组建了年龄生命表。从1986年第3代起至1987年年1987年第5代,8个世代的存活率曲线属于Slo-bodkinⅣ型,幼龄若虫期是死亡率最高,存活率最低的阶段;种群数量趋势指数分别为:9.74,16.04,5.73,6.80,13.22,6.71,24.59,10.87,K值分别为:2.8112,2.6831,3.0984,3.3600,2.9700,4.000,2.3700。通过K值分析,表明捕食性和寄生性天敌是控制褐飞虱种群数量的关键因素。
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| 关 键 词： | 褐飞虱 种群生态学/生命表 |
PRIMINARY STUDES ON LIFE TABLE OF NATURAL POPULATION OF BROWN PLANTHOPPER |
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| Xiao Tieguang,Chen Changming,. PRIMINARY STUDES ON LIFE TABLE OF NATURAL POPULATION OF BROWN PLANTHOPPER[J]. Journal of Hunan Agricultural University, 1992, 0(4) |
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| Authors: | Xiao Tieguang Chen Changming |
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| Abstract: | According to the results of the odservation of the dynamics of natural popula-tion of Nilaparvata lugens in Changsha region, 1986 and 1987, the age life of 8 generations ofbph has been given. From the third generation in 1986 to the fifth generation in 1987, the sur-vival rate curves of 8 generations both belongs to the Slobodein's IVtype; in the youngnymph stage, the death rates were higher and the survival rates were lower than other stagesof bph. The population indexes of 8 generations were respectively as follow: 9.74, 16.04, 5.73, 6.80, 13.02, 6.71, 24.59, 10.87, The K -values of 8 generations were respectively as fol-lows: 2.811, 2.683 1, 3.098 4, 3.860 0, 2.970 0, 4.000 0, 2.370 0. The K-value analysisshowed that the key factors regulating the population of bph were the predaatory and para-sitic natura enemies. |
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| Keywords: | Nilaparveta lugens population ecology/life table |
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