夜間特殊波長燈照防治荔枝細蛾同時保持良好荔枝品質

荔枝細蛾 (Conopomorpha sinensis Bradley, Litchi borer, 蒂蛀蟲) 嚴重的為害荔枝果實，為荔枝產業最主要的害蟲，少量蟲即可造成荔枝產量與品質巨大傷害，荔枝產業主要以農藥進行防治。為達荔枝產業永續發展與農藥減量目標，應開發防治效率高的物理防治方式。觀察發現，荔枝細蛾成蟲於白天棲息在樹幹下方陰影處，於有光環境活動力極低，夜間則活動力旺盛進行交尾與產卵，隔天日出後即處於靜止狀態。本技術利用荔枝細蛾的負趨光特性，以夜間燈照減少荔枝細蛾活動力達到減少為害之目標。篩選多種波長條件後，發現綠光可有效抑制荔枝細蛾活動力、減少產卵量與果實為害率，與白光處理比較，綠光燈照的果實較重、甜酸比亦較白光處理高，不影響荔枝果實品質。於高雄市杉林區、高雄市大樹區與屏東縣里港鄉的試驗結果顯示，夜間綠光燈照確實發揮良好的荔枝細蛾防治效果。建置夜間燈照設施成本每分地約2 萬元，以減少1 成損失計算，當年即可回收投入成本，此技術有良好的產業推廣與發展潛力，可減少農藥使用、友善環境，並讓消費者食用更安心。 Litchi borer (Conopomorpha sinensis Bradley) is the most important pests in the litchi (Litchi chinensis) industry. In the past, the litchi industry mainly used chemicals to control insects. Litchi borer usually hide in the shade under the trunk, and their activity is extremely low in a bright environment. They are mating and spawning at night, and in a static state in the day times. After screening a variety of spectral conditions, it was found that green light can effectively inhibit the activity of litchi borer, reduce spawn and fruit damage rate, and does not affect fruit quality. The experiment results show that the green light at night have a good protective effect on litchi in Dashu, Xiongshi and Ligang experiment orchard. This technology has great potential for industrial promotion and development, which can reduce pesticides usage and friendly to the environment.

Event(s)

農業試驗所鳳山熱帶園藝試驗分所成果發表研討會

Proceedings of the Symposium on Research Results of FTHES, TARI

Subjects

荔枝細蛾

LED燈

農藥減量

作物生產整合管理

Litchi borer

led

pesticide reduction

ipm

Publisher

農業部農業試驗所

Type

conference paper

File(s)

Name

no.241-9.pdf

Size

3.41 MB

Format

Adobe PDF

Checksum

(MD5):9d807b8ad09c0de45755875f9581e0d4