蒸汽消毒防治菊花育苗期土壤傳播性病害

Control of Soil-borne Disease on Chrysanthemum Cuttings by Steam Disinfection

劉興隆(Hsing-Lung Liu)

《臺中區農業改良場研究彙報》 96期 (2007/09) Pp. 53-62

https://doi.org/10.6956/BTDAIS.200709.0053

摘要

應用蒸汽機產生之高壓蒸汽進行菊花苗床之沙土消毒，當溫度達70℃並維持20 min，即完成蒸汽消毒處理，處理結束測得不同位置20 cm深之溫度範圍為76～95℃，30 cm深之溫度範圍為47～78℃，能完全殺死預先埋入沙土0、10、20及30 cm深之莖腐病菌（Rhizoctonia solania）、根腐病菌（Pythium aphanidermatum）及軟腐病菌（Erwinia chrysanthemi）。菊花莖腐病、根腐病及軟腐病病圃以蒸汽消毒，隔天扞插菊花，所生產之菊花種苗，其病害發生率只有0～2.1%，而對照不經蒸汽消毒處理，其菊花種苗發病率高達84.2～100%，顯示蒸汽消毒能同時防治菊花莖腐病、根腐病及軟腐病等菊花育苗期土壤傳播性病害。

關鍵字

菊花 ； 育苗床 ； 土壤傳播性病害 ； 蒸汽消毒 ； 防治

並列摘要

Sand seedbeds for chrysanthemum cuttings propagation was treated with steam at 70℃ for 20 min. to control soil-borne pathogens. After steam treatment, the temperature at 20cm depth ranges between 76℃ and 95℃, and temperature at 30 cm depth ranges between 47℃ and 78℃. Soil-borne pathogens including Rhizoctonia solania, Pythium aphanidermatum, Erwinia chrysanthemi could not survive at 0 to 30 cm depth in the sand seedbeds with the steam disinfection. A greater reduction of disease incidence was observed with the steam disinfection on the particular soil-borne disease of chrysanthemum cuttings, therefore application of steam disinfection could control the soil-born diseases of chrysanthemum cuttings at the same time.

並列關鍵字

chrysanthemum ； seedbeds ； soil-borne disease ； steam disinfection