行政院農業委員會台南區農業改良場  研究彙報第25號

高架式塑膠布覆蓋對檬果生產之影響

張明聰 黃杉茋 呂俊堅

摘  要

張明聰、黃杉茋、呂俊堅.1990.高架式塑膠布覆蓋對檬果生產之影響。台南區農業改良場研究彙報25:91~99。

本研究在檬果的主要產地台南縣玉井鄉,選擇9年生愛文檬果園10公畝,搭設高架隧道式PE塑膠布室,高度為距離樹冠上方1公尺。民國77年至78年,連續兩年之試驗調查,包括炭疽病、白粉病、黑斑病及浮塵子的發生,果實品質的分析等,結果發現:檬果自抽花穗前至果實成熟期,以透明塑膠布覆蓋遮雨,可以有效減少炭疽病對葉,花穗及果實等部位之危害,不但節省施藥次數一半以上,且防治容易、果實單果重較重、甜度高、花穗較長、葉面積較大、果實採收後炭疽病的發病率較低,且發病時間延後,提高果實的貯運品質。

關鍵詞:塑膠布覆蓋、檬果。

接受日期:1990年10月16日。


The Effect of Polyethylene-cloth Sheltering on the Mango Production

Chang, M. T., S. C. Hwang and C. J. Leu

Summary

A nine-year mango (cv, Irwin) orchard at Yuh-Jiing of Tainan Prefecture was selected and covered with polyethylene-cloth one meter above the canopy for avoiding from rain.  Continuous surveys were conducted form 1988 to 1989 to evaluate the effect of sheltering on the incidence of disease and insects, and the yield and quality of mango fruits.  Results were summarized as follow:

1.  The percentage of anthracnose on leaf, inflorescence and fruits of mango decreased significantly from inflorescence shooting to fruit ripening stage occurrence under sheltering condition, and disease was more easily controlled.

2.  The anthracnose disease on mango fruit after harvesting from in-sheltering was also less than control plants.

3.  The percentage of powdery mildew of inflorescence and the number of leafhopper on mango under PE-cloth sheltering were not significantly different to the control.

4.  Bigger fruit size, higher brix, longer inflorescence and large leaf area were obtained through sheltering.

5.  Treatment also improved the marketing quality of mango fruits.

Accepted for publication: October 16, 1990.



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