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Tomato disease control technology to control four major diseases of Tomato

             发布日期:09-25     来源:       发布者:       点击人数:      

       番茄在种植期间,最怕遇到病害的发生。一旦发生病害往往回导致减产,影响收益。下面我们就来学习下番茄病害防治技术。
                                 番茄病害防治技术 防治番茄四大病害
1、番茄早疫病:
       番茄发病后叶面具同心轮纹状病斑,暗褐色,水渍状。茎和叶柄、果实等发病后也有同心轮纹病斑,潮湿时病斑上有黑色霉状物。发病前后可用70%代森锰锌可湿性粉剂500倍稀释液,或75%百菌清可湿性粉剂400倍稀释液喷雾,每7天1次,连喷3-4次。

2、番茄叶霉病
       番茄果实发病时蒂部周围有凹陷较硬的黑色病斑,叶片有不规则黄色病斑,潮湿时产生褐色霉层,使叶片枯黄、卷曲,然后脱落。设施栽培发病较重。发病前后可用70%代森锰锌可湿性粉剂500倍稀释液,或50%速克灵可湿性粉剂800-1000倍稀释液喷雾,每7天1次,连喷3-4次。

3、番茄灰霉病
       开花期可在蘸花药液中加入0.1%的50%速克灵可湿性粉剂或50%扑海因可湿性粉剂,效果很好。也可对果实喷雾,但应注意轮换用药,防止病菌产生抗药性。还可用50%多克粉尘剂,每亩喷粉1公斤。

4、番茄斑枯病
       叶片发病时呈水渍状,病斑近圆形,中央灰白色,边缘暗褐色,稍凹陷,如鱼目状,后散生黑色小点,易穿孔。叶柄、茎和果实都可散生小黑点。发病初期可用70%代森锰锌可湿性粉剂500倍稀释液,或50%多菌灵可湿性粉剂500倍稀释液喷雾,每7天1次,连喷3-4次。

       好了,关于番茄的四大病害的防治就先介绍到这里,希望对大家能有所帮助,减少经济损失。

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