甘藷有機栽培技術之研究

Abstract

本研究以甘藷臺農57 號、66 號及72 號為材料，試驗結果如下:輪作豆科綠肥及不同採收期顯示四種綠肥對甘藷產量性狀影響一致，種植後第180天收穫產量最高。肥培管理對甘藷有機栽培產量顯示，甘藷施用猪糞堆肥之塊根產量較高於施用雞糞堆肥。甘藷有機栽培之田間雜草控管對甘藷農藝性狀及產量之影響，在春秋作中皆以中耕除草培土、敷蓋稻草、花生殼及稻殼與畦溝間植綠肥作物，對甘藷田間雜草管理、農藝性狀及產量影響皆優於對照組。甘藷有機栽培之病蟲害綜合管理顯示，使用甘藷蟻象性費洛蒙誘殺器、三種顏色黏紙及施用蘇力菌，皆能有效抑制甘藷之病蟲害。 This research take sweet potato TN57, TN66 and TN72 as the material, the test result as follows: The crop rotation leguminosae green manure and the different recovery time demonstrated four kind of green manure to sweet potato yield character influence consistent, after the planter the 180th day harvest yield is highest. Fat cultivates the management to demonstrate to the sweet potato organic cultivation output that, block of root output the sweet potato employment pig excrement compost comparatively is higher than the employment chicken manure compost. Field of weed controls the sweet potato organic cultivation to influence the sweet potato agronomic characters and yield, As for the effect of cultivation times, mulch materials （the peanut shell and the rice straw and rice husk）and interseeding crops of green manure on the agronomic characters of sweet potato for fall and spring, To the sweet potato field weed management, the agronomic characters and the yield influence all surpass the control. Plant disease of the sweet potato organic cultivation synthesizes the management demonstration, uses sweet potato weevils, Cylas formicarius elegantulus Summers. sex pheromone traps killing, three kind of colors mounts the paper and employs Bacillus thuringiensis, all can effectively suppress the sweet potato plant disease.