怎样识别和防治枣锈病--杨远锋的博客

怎样识别和防治枣锈病

[ 2011-7-18 19:45:00 | By: 杨远锋 ]

    (1)症状：枣锈病只危害叶片。初期在叶背散生淡绿色小点，后渐凸起呈暗黄色，即病菌夏孢子堆。夏孢子堆形状不规则，多发生在中脉两侧、叶尖端和基部。病斑表面破裂后散生黄色夏孢子。在叶正面与夏孢子堆相对应处发生绿色小点，边缘不规则，叶面呈花叶状。最后叶片干枯早落，以致削弱树势，降低产量和品质。

    (2)发病规律：枣锈病是由真菌危害引起的病害。一般于7月中、下旬开始发病，8月下旬至9月间出现大量夏孢子堆，不断进行再次侵杂，进入发病高峰期，并开始落叶。8—9月份降雨多，有利于病害的发生，干旱年份发病轻。

    (3)防治措施：

    ①加强栽培管理。合理密植，修剪过密枝条，改善通风透光条件；加强肥水管理，排除积水，防止果园过于潮湿，可减少病害发生。

    ②喷药保护。于7月上旬喷1次1：2—3：300波尔多液或波美0．3度石硫合剂，1月后再喷1次，可有效控制枣锈病的发生。

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原创

[ 2016-9-6 17:10:26 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:46:03 | By: 原创(游客) ]

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原创

[ 2016-9-30 11:22:29 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-10 3:20:45 | By: bkaeh(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-10 20:46:48 | By: nvyad(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-12 18:17:34 | By: euvzd(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-13 18:22:34 | By: nmbei(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-15 6:57:34 | By: rhjmq(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-17 1:15:13 | By: eqfhk(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-17 20:50:09 | By: mprup(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2016-10-19 2:40:46 | By: rhjmq(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-22 3:57:56 | By: odgko(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-23 14:26:08 | By: mizfh(游客) ]

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