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Position: Home > Articles > Studies on the economic thresholds of Carposina sasakii Plant Protection 2011,37 (4) 91-94

桃小食心虫经济阈值的研究

作  者：
范保银;王小奇;刘薇薇;林文忠;贾楠
单  位：
辽宁省普兰店市植物保护站;沈阳农业大学植物保护学院
关键词：
桃小食心虫;苹果;卵果率;产量损失;经济阈值
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。
译  名：
Studies on the economic thresholds of Carposina sasakii
作  者：
Fan Baoyin1,Wang Xiaoqi1,Liu Weiwei2,Lin Wenzhong2,Jia Nan2(1.College of Plant Protection,Shenyang Agricultural University,Shenyang 110161,China;2.Pulandian Station of Plant Protection,Pulandian 116200,China)
关键词：
Carposina sasakii;apple;fruit infestation rate with eggs;yield loss;economic threshold
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**) 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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