Home
Posts
Article
Encyclopedia
Garden
Set
English

万带兰病虫害及防治方法

金达威
2017-07-27
病虫害主要发生于雨水高温季节,一般以预防为主,每周施用一次0.2%的代森锰锌或菌灵。第二周施用一次0.2%的氧化乐果。

常见黑斑病危害叶片,可用50%代森锌可湿性粉剂800倍液喷洒防治。虫害主要有介壳虫和粉虱危害,可用40%氧化乐果乳油1000借液喷杀.


症状

叶斑半圆形(始自叶缘)、近圆形以至不定形。褐色、灰褐色至灰白色,稍下陷。后期斑面现散生的针头大小黑粒(病菌分孢器)。

病原及发病特点

病原为半知菌亚门真菌,多为叶点霉[Phyllostictasp.],有的为大茎点霉[Macrophomasp.]壳针孢霉[Septeriasp.]和壳二孢霉[Ascochytasp.]。病菌均以菌丝体和子实体(分孢器)在病部和病残体上越冬,翌年分生孢子自分孢器顶部孔口涌出,借雨水溅射传播、扩散,从孔口或伤口侵入致病。温暖潮湿的天气或园圃环境,皆有利这些病菌的繁殖、传播和侵染。

防治方法

①剪除病段和清除病残物集中烧毁。

②改善园圃通透性。

③喷药保护新抽叶片[1%波尔多液,或30%氧氯化铜悬浮剂+4%多硫悬浮剂(1∶1)600~800倍液(即混即喷),或试用50%加瑞农可湿粉600倍液,或40%氟硅唑、25%腈菌唑浮油7000倍液,或50%甲羟鎓水剂1500倍液7~l0天喷一次,连喷数次。
0
0
Article
comment
😀 😁 😂 😄 😆 😉 😊 😋 😎 😍 😘 🙂 😐 😏 😣 😯 😪 😫 😌 😜 😒 😔 😖 😤 😭 😱 😳 😵 😠
* Only support image type .JPG .JPEG .PNG .GIF
* Image can't small than 300*300px
Nobody comment yet, write down the first!
Just Reply
FeedBack

You have any problems or suggestions, please leave us a message.

Please enter content
Download GFinger APP

Scan QR code, download GFinger APP to read more.

QR Code

Scanning QR Code, directly to see the home page

Switch Language
Set
VIP
Sign out
Share

Share good articles, GFinger floral assistant witness your growth.

Please go to the computer terminal operation

Please go to the computer terminal operation

Forward
Insert topic
Remind friend
Post
/
Submit success Submit fail Picture's max size Success Oops! Something wrong~ Transmit successfully Report Forward Show More Article Help Time line Just Reply Invite you to chat together! Expression Add Picture comment Only support image type .JPG .JPEG .PNG .GIF Image can't small than 300*300px At least one picture