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常见病虫害
主要疾病
1> 白粉病:叶子和茎的表面出现白色粉状的病菌,通常情况下叶片背面比正面多。黄瓜、南瓜、茄子等植株上常见。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0001.jpg?sign=1739539611-dPF1P43aY5undfeIdCGKrHkpg4FvwvON-0-ee6c82ecaf52bbd6eeb90e221820fae6)
2> 灰霉病:低温高湿时易发此病。西红柿、茄子、黄瓜等植株上常见。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0002.jpg?sign=1739539611-wjZ7YCBTyl2gp28BYhyj0cBwD7ap5Y7R-0-50eeaf2b529f1d8982c11396b8775e02)
3> 霜霉病:多发于高温高湿期,黄瓜植株常染此病。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0003.jpg?sign=1739539611-QbjSZJW9kNJkSJfSq9vRStQQuYZfyQ2g-0-885102f7b542b79fc504c4f004a7522f)
4> 软腐病:发病晚期植株自行倾倒。卷心菜、白菜、萝卜等蔬菜常见此病。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0004.jpg?sign=1739539611-CMqMWw8vZJVG7a7gRampFfNcEWNYAX7M-0-b744e8c6ef42b0fbed4966149e145560)
5> 花叶病:大多数蔬菜都有可能染上此病。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0005.jpg?sign=1739539611-dHxZQotRBu4rimcfUcG6j5HM2OvNtv4h-0-5cc31556b188c47f26c2be30e6e771a0)
6> 疫病:高温高湿时多发。西红柿、青椒等植株上常见。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0027_0006.jpg?sign=1739539611-iaJPNkFhVXyvluiHXw1TPwXjfGosc3CH-0-3f77e65d6d1daaa4489eda5b32094d47)
主要虫害
1> 蚜虫:在叶片、嫩茎、花蕾、顶芽等部位成群地吸取汁液,严重时会导致植株死亡,多发于春、秋季。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0028_0001.jpg?sign=1739539611-xCdPVJSkqMmft77UizrwdfulL41KOpSP-0-ee25df5ae79a661d56164190210591c0)
2> 青虫:蝶和蛾的幼虫,主要危害十字花科蔬菜。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0028_0002.jpg?sign=1739539611-tUmHMeFlHAmZY4kFowBa4EhIAfoTdweP-0-eb88a2c7fc72888c07bdcebfd073ad5f)
3> 夜盗虫:危害十分严重,多发于茎叶类植物。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0028_0003.jpg?sign=1739539611-aNIQIdQBpwwiBt8KXXx1pwyPiS6nIffd-0-2604bab3bdd9029237aebda40f825d07)
4> 粉虱:多发于高温干燥时期,西红柿、茄子等植株上常发生。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0028_0004.jpg?sign=1739539611-83P8ophNhhTmwQfbGPTpgp92LOouOEEh-0-b944ef24aaf2f1a6ea8359526c33092a)
5> 红蜘蛛:吸取汁液,使叶片出现灰黄点或斑块,导致叶子枯萎、脱落。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0028_0005.jpg?sign=1739539611-EuQN9MauDwmdrhTlg9Msub262KhQKPuJ-0-a8a1e2579cee7571e8da16af70a2cdbc)
6> 鼻涕虫:喜欢在夜晚和阴天时出来觅食,咬食菜叶和果实。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0029_0001.jpg?sign=1739539611-OPsDL6wOGTxSoasEJwHFaZzAGIgBi2km-0-3f5b962566a7095a4c0fc04db8250647)
7> 黄曲条跳甲:常危害叶菜类蔬菜。
![](https://epubservercos.yuewen.com/C44F85/6398897604537801/epubprivate/OEBPS/Images/figure_0029_0002.jpg?sign=1739539611-6I1uisjCA2OscvbDRXHoRoO88jYkZD3w-0-878f107593d5893ae194e372c38ea02e)