|Title:||颱風後縮短葉菜類蔬菜供應市場時間之品種研究||Other Titles:||Improving Shortage of Leafy Vegetable Supply after Typhoon by Using New Cultivar||Authors:||王三太
|Keywords:||颱風;小白菜;莧菜;Typhoon;Non-heading chinese cabbage;Amaranth||Issue Date:||Oct-2003||Publisher:||農業試驗所; 中華農業氣象學會||Related Publication(s):||農業氣象災害調查與防護技術||Start page/Pages:||145-151||Abstract:||
Changes of market yield and average price per kilogram of non-heading chinese cabbage and vegetable amaranth, during typhoon periods of Toraji and Nan in 1991, may be divided into four stages, namely, high-price stage, profitable stage, lag stage and breakdown stage. High-price stages for non-heading chinese cabbage were 18 and 20 days, while they were 11 and 20 days for amaranth, after the periods of Toraji and Nan. By using seed-broadcasted method immediately after typhoon, production of non-heading chinese cabbage and amaranth could not timely reach the high-price stage. When cultivated in plastic house or using rain-tolerant cultivar in net house, there was chance to harvest in this stage. Profitable stages for non-heading chinese cabbage were 3 and 8 days, while they were 5 and 13 days for amaranth, after the periods of Toraji and Nan. It was found that when farmers broadcasted seeds immediately after typhoons, it could reach this stage. Lag stage lasted only 1 to 3 days, in which market yield increased significantly and price was as good as in profitable stage. Breakdown stage was near harvest time if seeds were broadcasted right after typhoon. Regional experiments results showed that non-heading chinese cabbage line ‘01-17’ reached high-price stage with the average yield increased 92.8% relative to those from the local cultivars after Toraji and Narin and heavy rainy in Ping-Tung in 1991. Amaranth cultivar ‘Golden Rich’ had averaged yield 42.7% higher than local cultivars in Shiluo, Tainan and Pingtung with averaged height 92.8% higher and harvest date 2-4 days earlier than the local cultivars. Since high-price stage of amaranth after Toraji had only 11 days, the early harvest was very important to farmers. It suggests that selection and breeding of rain-tolerant or heat-tolerant cultivar is a good strategy for farmers to produce leafy vegetable after typhoon and to maintain a reasonable income after disasters.
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