桃花的病害防治

植物图片 2021-05-12 15:22

随着生活水平的提高，现在很多家庭中都会栽植桃花进行观赏，如果病害困扰了桃花的生长，就会影响它的观赏价值，那么桃花的病害如何防治？

桃花穿孔病

主要危害叶片，同时也危害枝梢和果。

1.是由细菌引起的穿孔病称细菌性穿孔病。

2.是由真菌引起的真菌性穿孔病。

温暖多雨的季节利于桃细菌性穿孔病的发生，树势衰弱、排水不良、通风透光差的桃花植株易感病。加强管理，增施基肥，改良土壤，增强树势，提高抗病能力是防治桃穿孔病的主要方法。

同时注意剪除病残体，减少再侵染病原。在早春发芽前喷波美3-5°石硫合剂，可兼治害虫，生长期可喷70%甲基托布津可湿性粉剂800-1000倍。对细菌性穿孔病可选用链霉素、土霉素、井冈霉素等杀细菌性药剂。

桃花炭疽病

主要为害果实，叶和新梢也能发病。桃花开花时如遇低温多雨则更易发病。消灭病梢、枯枝、僵果，减少越冬菌源是其主要防治方法，也可于花前喷波美5°石硫合剂。花后可用50%退菌特600倍，70%甲基托布津800-1000倍喷施。

桃花流胶病

主要危害枝干，对树龄较大的植株危害较为严重。加强桃树管理，增强树势，提高抗性，及时有效地控制树干害虫，减少不必要的机械损伤是防治的主要方法，也可根据具体情况选择适当的杀虫剂、杀菌剂。

桃花缩叶病

主要发生在早春低温多雨的季节。消灭越冬病菌，主要防治方法是在花瓣露红时用70％代森锰锌500倍，70％甲基托布津1000倍喷施。

特征:桃花为落叶乔木.叶椭圆状披针形,边缘有粗锯齿,无毛,叶柄长1-1.5CM.花单生，先叶开放，几无柄，多粉红色，5瓣，花期3-4月，6-9月果熟，变种有深红、绯红、纯白及红白混色等花色变化以及复瓣和重瓣种。

专题： 桃花
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