人工模擬酸霧對三種冬季葉菜之傷害

Abstract

本試驗目的主要是探討酸霧對田間種植三種冬季蔬菜（茼蒿、芥藍、菠菜）的葉片構造傷害及其生理機能障礙的影響。處理之pH值為16,2.6,3.6,4.6及5.6（對照組）等五種，播種後28天關始噴灑酸霧，經三週處理，每週噴灑0.3公運霧量三次，整個生育期共9次處理”酸霧對三種蔬菜之傷害主要在葉片，受害最嚴重為pH1.6處理，而pH3.6酸度以上則無傷害。The primary objectives were to determine the acidic fog stress cause alternation in the vegetables growth. physiological and foliar injury responses. Field plots of garland chrysanthemum (Chrysanthemum coronarium L.). Kale (Brassica oleracea L.) and spinach ( Spinacia oleracea L.) were exposed to three 0.3mm simulated fog episodes per week at specific acidities from pH 1.6, 2.6, 3.6, 4.6 and 5.6 treatments. For all three vegetables, foliar injury was assessed to determine damage response levels, The most severe injury occurred near pH 1.6, and no injury was observed above appoximately pH 3.6, Decrease of leaf area of kale was also most severe at pH 1.6 but was appoximately 20% less severe than those of spinach and garland chrysanthemum at this acidity.