| 旱塬麦田生态系统蚜虫病毒病多目标综合防治策略研究 |
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| 引用本文： | 赵惠燕,汪世泽,张改生.旱塬麦田生态系统蚜虫病毒病多目标综合防治策略研究[J].西北农业学报,1995,4(1):44-50. |
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| 作者姓名： | 赵惠燕 汪世泽 张改生 |
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| 摘 要： | 调查了陕西渭北旱塬麦田生态系统中蚜虫、病毒病、天敌等时空动态与数量动态.采用多目标最优化方法分析了推迟播期、药剂拌种、适时防治、筛选抗性品种等综合措施对麦田生态系统的影响以及对蚜虫、病毒病的防治作用,制定了提高小麦产量的最佳策略.试验结果表明,系统中蚜虫与病毒病的田间时空分布图式相似,均为聚集分布,且随时间变化呈阻尼振荡规律或聚集强度衰减规律;蚜虫的数量动态为偏峰曲线,病毒病的数量动态为Logistic曲线.药剂拌种与最佳播期、最佳防治时间以及优良抗性品种的结合明显减轻病虫危害,提高小麦产量.灵敏度分析证实了上述结论.
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| 关 键 词： | 小麦 蚜虫 病毒病 防治 麦田生态系统 旱塬 |
| 收稿时间： | 1994/2/18 0:00:00 |
STUDY ON MULTLI-OBJECTIVES INTEGRATED MANEGEMENT STRATEGY OF APHID AND VIRUS IN WHEAT FIELD ECOLOGY SYSTEM IN DRY PLATEAU |
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| Zhao Huiyan,Wang Shize and Zhang Gaisheng.STUDY ON MULTLI-OBJECTIVES INTEGRATED MANEGEMENT STRATEGY OF APHID AND VIRUS IN WHEAT FIELD ECOLOGY SYSTEM IN DRY PLATEAU[J].Acta Agriculturae Boreali-occidentalis Sinica,1995,4(1):44-50. |
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| Authors: | Zhao Huiyan Wang Shize and Zhang Gaisheng |
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| Abstract: | The spatial and numerical dynamics of aphid,virus and natural enemy were investigated in wheat field ecological system in dry plateau.The effects of sowing time delaying,seed dressing,timely controlling,resistant varieties selecting and so forth on wheatfield ecological system and their controll functions were analysied by using the method of multi-objectives optimization.The optimum strategy of
raising yield was worked out.The results showed that the spatial patterns of aphid and virus in the system are alike,and both are aggregation.The intensity of aggregation is reducible or periodical damping oscillatory with time changing.The numerical danymic of aphid is a slanting peak curve,and that of virus is a Logistic curve.The integration using of sowing time,seed dressing,timely controlling, resistant varieties selecting could reduce pest damage and raise yield.The results above were confirmed by using sensitivity analysis. |
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| Keywords: | Wheat aphid Virus Management strategy Wheat field ecological system |
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