| 范保银1，王小奇1*，刘薇薇2，林文忠2，贾楠2.桃小食心虫经济阈值的研究[J].植物保护,2011,37(4):91-94. |
| 桃小食心虫经济阈值的研究 |
| Studies on the economic thresholds of Carposina sasakii |
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| DOI： |
| 中文关键词: |
| 英文关键词:Carposina sasakii apple fruit infestation rate with eggs yield loss economic threshold |
| 基金项目: |
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| 中文摘要: |
| ［目的］ 研究苹果不同品种桃小食心虫危害的经济阈值，为合理制定苹果桃小食心虫的防治策略提供依据。［方法］ 选取卵果率作为防治指标，对卵果率和苹果产量及产量损失的统计关系进行分析。［结果］ 产量损失率(y)与卵果率(x)呈正相关，其线性回归式分别为：‘津青’,y=0.650 8x+2.091 6(R=0.994 06*);‘黄元帅’,y=2.099 5x+0.984 5(R=0.986 0*);‘乔纳金’,y=0.589 1x+2.373 3(R=0.910 9*)。［结论］ 应综合有关因素确定不同品种苹果不同产量水平的经济允许产量损失率，制定出相应的经济阈值。 |
| 英文摘要: |
| ［Objective］ The economic thresholds of Carposina sasakii Matsumura on different apple varieties were studied to make reasonable control strategy for C. sasakii. ［Method］ The statistical relationships between fruit infestation rate with eggs and larvae and between fruit infestation rate with eggs and yield loss were analyzed by fruit infestation rate with eggs as the control index. ［Result］ The relationships between fruit infestation rate with eggs and yield loss rate of different apple varieties were linear: y=0.650 8x+2.091 6(R=0.994 06*) for ‘Jinqing’; y=2.099 5x+0.984 5(R=0.986 0*〖KG-*2〗*) for ‘Huangyuanshuai’; y=0.589 1x+2.373 3(R=0.910 9*) for ‘Qiaonajin’. ［Conclusion］ The economic thresholds of C. sasakii on apples should be determined according to the relevant factors, yield loss rates at different yield levels of different varieties of apples. |
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