黑斑的防治

in hive-155234 •  3 years ago 

叶子上的黑点就是黑斑病的特征。在上海的梅雨季节，天气炎热并且潮湿的情况下，月季非常容易得的一种病。所以，每年在上海的6、7、8月份，天晴的情况下，就得抓紧时间给月季打药预防。一般用什么多菌灵、百菌清等只要有标记杀黑斑的，基本都没太大问题。就是需要注意预防就可以了。如果不注意，这种黑斑有可能会蔓延到整个花园，最后叶子掉落，植株也命不久矣。
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3 years ago by

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