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                枣果为什么有黑斑

                作者:   文章来源: 湖北农业报    发表时间:2019-09-26    点击量:

                  枣果着色期前后,果面上出现黑色病斑,一般是褐斑病,一般在八九月份枣果将要着色时大量发病。褐斑病的防治技术关键是加强栽培管理。搞好果园卫生,及时清除裸地僵烂果,对发病严重的枣园结合修剪剪除枯枝、病虫枝,并集中烧毁。增施有机肥,增强树势,提高树体抗病能力。药剂预防,落花后幼果期开始防治。一般在落花后半月左右开始喷药,有效药剂有30%戊唑·多菌灵悬浮剂1000~1200倍液、70%甲基硫菌灵可湿性粉剂1000~1200倍液、1∶2~3∶200~240倍波尔多液等。注意在防治过程中要交替用药,不要只使用一种药剂,同时,保护剂和治疗剂也要交替使用,以提高防治效果。