| 用期距法预测银杏大蚕蛾发生期 |
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| 引用本文： | 许水威,叶淑琴,王立明.用期距法预测银杏大蚕蛾发生期[J].辽宁林业科技,2003(2):10-12. |
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| 作者姓名： | 许水威 叶淑琴 王立明 |
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| 作者单位： | 1. 新宾县森防检疫站,辽宁,新宾,113200
2. 新宾县森调队,辽宁,新宾,113200 |
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| 摘 要： | 为准确掌握银杏大蚕蛾各虫态的发生时间，通过6a的银杏大蚕蛾发生期系统观测资料，运用数理统计方法，计算出银杏大蚕蛾同一虫态和不同虫态的理论期距值和平均数标准差，准确地预测出某一虫态的始盛期、高峰期、盛末期，可为确定最佳的防治时间提供依据。
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| 关 键 词： | 发生期 银杏大蚕蛾 期距值 平均数标准差 预测预报 核桃楸害虫 |
| 文章编号： | 1001-1714(2003)02-0010-03 |
| 修稿时间： | 2002年9月9日 |
Predicting occurring periods of Dictyopla Japonica by periodic distance methods |
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| XU Shui-wei,YE Shu-qin,WANG Li-ming.Predicting occurring periods of Dictyopla Japonica by periodic distance methods[J].Liaoning Forestry Science and Technology,2003(2):10-12. |
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| Authors: | XU Shui-wei YE Shu-qin WANG Li-ming |
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| Institution: | XU Shui-wei~1,YE Shu-qin~1,WANG Li-ming~2 |
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| Abstract: | To have a good grasp of occurring time of Dictyopla Japonica in different development stage, through 6-year systematic observation data in occurring periods of Dictyopla japonica and by using statistics methods, theoretical periodic distance values and standard error of the mean of the same insect-morphology and different insect morphology were calculated, and initial booming period, peak stage and ending period of certain insect-morphology were predicted accurately, which could provide basis for determination of the optimum prevention and control time. |
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| Keywords: | Dictyopla japonica periodic distance value standard error of the mean prediction |
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