麦田芦苇生态经济阈值初探  

Preliminary Study on the Ecological and Economic Thresholds of Phragmites communis in Wheat

作　　者：宋爱颖[1] 孙家峰[1] 张瑞[1] 宋光明[2] 耿军 李婷 刘楚彬 

机构地区：[1]安徽省萧县农业技术推广中心,安徽萧县235200 [2]安徽省萧县圣泉乡农业技术推广站,安徽萧县235200 [3]安徽省萧县杜楼镇农业技术推广站,安徽萧县235200 [4]安徽省萧县丁里镇农业技术推广站,安徽萧县235200

出　　处：《杂草科学》2013年第2期56-58,共3页Weed Science

摘　　要：不同密度芦苇对小麦产量影响的田间调查结果表明,小麦产量损失率与芦苇密度的最佳回归模型为韦布尔函数公式,简化为y=72.2×{1-exp[-(x-2.7)/218.4]};一般密度和较高密度下芦苇的经济危害允许水平分别为7.1%、14.2%,生态经济阈值分别为25.3、50.5株/m2。According to a field survey, the impact of increasing densities of Phragmites communis on wheat yield losses was estimated best by the simplified regression model y = 72.2 x {1 -exp [ - （x -2.7）/218.4 ] I- The allowable economic damage by P. communis was 7. 1% and 14. 2% low and high densities, respectively. The ecological and economic thresholds of P. communis are 25 and 51 plants/m2 at low and high densities,respectively.

关 键 词：麦田 芦苇 经济阈值 防除指标 

分 类 号：S451[农业科学—植物保护]