頭痛的害蟲-茶角盲椿象

茶角椿象|Helopeltis fasciaticollis Poppius|茶水部|LittoTea
茶角椿象|Helopeltis fasciaticollis Poppius|茶水部|LittoTea

茶角盲椿象主要分布於平地至低海拔山區, 以刺吸式口器吸食寄主樹液. 被吸食過後的茶葉呈現許多褐色的小點, 嚴重時, 葉片如同焦黑一般, 喪失水分及韌性, 碰觸之後甚至會直接斷裂.

根據目前文獻與研究顯示, 尚未有一個最有效的良方可以藉由食物鏈的自然方法來抑制茶角盲椿象, 甚至國內至今仍無核准任何可以撲殺的藥劑 (茶業改良場發行之茶樹良好農業規範 http://ogserv.tactri.gov.tw/emailcaseline/TA03.asp?Enc=db7dda8f7abe027615859f6590c666ff&Click=Y&KeySrh=&Case_Type=&Sch=). 即使有批准的藥劑, 我們依舊杜絕使用任何化學藥品.

學者建議防治茶角盲椿象的方式如下.

  1. 以人工捕捉
  2. 增加人為擾動
  3. 保持茶園通風.
  4. 適當保留雜草.
  5. 在茶葉萌芽前或初期, 以天然植物油中的窄域油500倍噴灑1-2次, 每次間隔7-10天, 最少須於採茶前兩周停藥.
  6. 噴灑天然植物油的苦楝油500倍, 噴灑2次, 每次間隔7-10天, 最少須於採茶前兩周停藥.

希望這些方法真的有效驅趕茶角盲椿象. 試完再跟各位報告.

The bug, Helopeltis fasciaticollis Poppins, loves the juice from fresh tea leaves. It is always a big headache for farmers to expel them from the tea gardens, especially in low altitude area in Taiwan. According to the current research, it is not found any no natural enemy yet. There is no gov approved pesticide based on the information from TACTRI at Council of Agriculture, Taiwan    (http://ogserv.tactri.gov.tw/emailcaseline/TA03.asp?Enc=db7dda8f7abe027615859f6590c666ff&Click=Y&KeySrh=&Case_Type=&Sch=). Well, even though we have the chemical option to get rid of the bug, we still don’t want to use it anyway.

Here are some recommendations from the researchers to expel the bugs by the nature way.

  1. Catch them by hands (very labor intensive and low efficiency).
  2. Disturb the bushes frequently.
  3. Keep a great venting environment in a tea garden.
  4. Reserve appropriate grass in the gardens.
  5. At early budding stage, apply dilute 1/500 natural botanical mineral oil (天然植物窄域油) 1-2 times with 7-10 days interval. Stop application at least 2 weeks before plucking.
  6. Spray dilute 1/500 natural botanical neem oil (天然植物苦楝油1-2 times with 7-10 days interval. Stop application at least 2 weeks before plucking.

Hopefully these measures really help to protect the tea sprouts from Helopeltis fasciaticollis Poppius (茶角盲椿象). Let’s see!

 

Alvin Lin

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