| 大螟自然种群动态的初步研究 |
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| 引用本文： | 顾海南. 大螟自然种群动态的初步研究[J]. 南京农业大学学报, 1987, 0(1) |
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| 作者姓名： | 顾海南 |
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| 作者单位： | 南京农业大学昆虫教研组 |
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| 摘 要： | 运用生命表方法研究南京地区1981年第二代大螟自然种群动态的结果表明,该代个体死亡主要出现在低龄和老龄幼虫期。就其致死原因而言,低龄期主要是气候因素(暴雨),老龄期则主要是捕食性和寄生性天敌。该代大螟种群的世代存活率为4.99％,种群增长指数为5.43。
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| 关 键 词： | 大螟 种群动态 生命表 |
A PRELIMINARY STUDY ON THE NATURAL POPULATION DYNAMICS OF PINK RICE BORER,SESAMIA INFERENS WALKER |
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| Gu Hainan. A PRELIMINARY STUDY ON THE NATURAL POPULATION DYNAMICS OF PINK RICE BORER,SESAMIA INFERENS WALKER[J]. Journal of Nanjing Agricultural University, 1987, 0(1) |
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| Authors: | Gu Hainan |
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| Abstract: | Life-table techniques were used to investigate the natural population dynamics of pink rice borer, Sesamia inferens Walker. A study on the second generation of this insect in Nanjing in 1981 showed that the mortalities mainly occurred at both the early and the late larval instar stages. The main causal factors for the early larval instars were unfavourite abiotic conditions such as weather, and those for the late larval instars were natural enemies. The survival rate of the generation was 4.99% and the growth-index of the population was 5.43.The survivorship curve for the population was compared with the two types of curve described by P.W. Price (1975) and analyzed. Based on the analyses of the life-table and the survivorship Curve, some measures for controlling this pest insect are proposed. |
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| Keywords: | Pink rice borer Natural population dynamics Life table |
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