苹果病害的流行特点ppt课件

1、41235报告提纲报告提纲一、发生与危害一、发生与危害Text in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in hereText in h

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3、流行与防控Text in hereText in hereText in here接种后用接种后用药时间药时间(hr)药剂药剂平均每叶病斑数平均每叶病斑数(个个)对病斑显症的对病斑显症的抑制效果抑制效果(%)平均病斑直径平均病斑直径 (cm)对病斑扩展的对病斑扩展的抑制效果抑制效果(%)24吡唑嘧菌酯20.67 9.17a68.470.69 0.51ab47.78咪鲜胺25.14 22.02ab61.650.63 0.45a51.90烯酰吗啉62.67 25.99c4.410.54 0.24a58.86戊唑醇50.29 7.34ac23.291.16 0.63bc12.03氟硅唑57.22 1

4、0.95bc12.710.93 0.62ac29.23甲基硫菌灵82.33 37.05c-25.591.09 0.53bc17.41CK65.56 32.84c0.001.32 0.73c0.0072吡唑嘧菌酯21.57 21.38a67.091.52 0.67b-15.35咪鲜胺45.11 14.18ab31.190.65 0.41a51.01烯酰吗啉57.00 28.98ac13.051.03 0.30ab21.68戊唑醇70.25 26.11bc-7.160.99 0.25ab24.68氟硅唑62.89 25.30bc4.070.98 0.46ab25.95甲基硫菌灵92.78 20.7

5、8c-41.531.08 0.54b18.04CK65.56 32.84bc0.001.32 0.73b0.00药剂药剂施药后不同时间后接种叶枯炭疽病菌叶片上的平均病斑数及保护效果施药后不同时间后接种叶枯炭疽病菌叶片上的平均病斑数及保护效果0天3天6天11天18天每叶病斑数保护效果（%）每叶病斑数保护效果（%）每叶病斑数保护效果（%）每叶病斑数保护效果（%）每叶病斑数保护效果（%）波尔多液波尔多液0.331.00a99.872.112.15a98.5755.567.26A76.11103.337.07A54.63113.3361.39A50.24凯特凯特0.670.87a99.7416.336

6、.92ab88.9751.673.54A77.78108.675.68A52.29195.5676.34Ab14.15拿敌稳拿敌稳2.223.35a99.1511.8914.65a91.9754.4413.33A76.58113.896.51Ab50174.4462.27Ab23.41百泰百泰0.561.13a99.7911.8910.23a91.9758.5613.37A74.81126.677.07Abc44.39168.8947.02Ab25.85甲基硫菌灵甲基硫菌灵7.784.41a97.0152.5035.36b64.5691.1144.35A60.81163.3330.82Bd28

7、.29165.0052.25Ab27.56代森锰锌代森锰锌0.000.00a10010.566.93a92.8762.7818.89A73181.1130.60De20.49178.8954.42Ab21.46咪鲜胺咪鲜胺4.672.65a98.2130.8917.22ab79.1598.8959.88A57.47167.7840.24Cd26.34230.0065.95B-0.98可杀得可杀得7.675.10a97.0526.8921.37ab81.8592.2221.08A60.33193.3351.72De15.12238.8974.07B-4.88CK260.00141.51b0148

8、.1343.91c0232.5090.36B0227.7871.20E0227.7879.49B0Text in hereText in hereText in here一、流行特点一、流行特点时间时间(月月)发病时期发病时期对应流行时期对应流行时期防控重点与目标防控重点与目标46初侵染期初侵染期单利期单利期控制子囊孢子初侵染，控制子囊孢子初侵染，6月底病叶率月底病叶率1%7病菌累积期病菌累积期指数增长期指数增长期控制病菌积累，控制病菌积累，7月底病叶率月底病叶率3%89发病高峰期发病高峰期逻辑斯蒂期逻辑斯蒂期控制病害盛发，控制病害盛发，8月底的病叶率月底的病叶率1210雨后雨后7天内，使用高效内吸剂天内，使用高效内吸剂1210雨前雨前7天内没有药天内没有药雨后第雨后第615天，每天检查有无叶片发天，每天检查有无叶片发病。病叶率超过病。病叶率超过5%，显症当天，喷施，显症当天，喷施高效内吸剂高效内吸剂一、轮纹病的危害一、轮纹病的危害尤其矮化密植园尤其矮化密植园二、侵染来源二、侵染来源系的中间砧部分系的中间砧部分三、流行特点三、流行特点显减少显减少四、防控战略与技术措施四、防控战略与技术措施枝条枝条l 喷药维护：剪砧后及时喷施波尔多液等药剂维护剪锯喷药维护：剪砧后及时喷施波尔多液等药剂维护剪锯口口l 修剪后：喷高浓度波尔多液修剪后：喷高浓度波尔多液CuSO3:GaO:H2O=1