生態農業：農業精準栽培管理技術開發【土壤環境科學系賴鴻裕副教授】

論文篇名 英文：Effects of poultry-litter biochar on soil properties and growth of water spinach (Ipomoea aquatica Forsk.)
中文：雞糞生物炭對土壤性質及蕹菜生長之影響
期刊名稱 Sustainability
發表年份,卷數,起迄頁數 2018, 10, 2536
作者 Wang, S.L., C.H. Yu, P. Tongsiri, M.P. Cheng, and H.Y. Lai*(賴鴻裕)
DOI 10.3390/su10072536
中文摘要 本研究利用兩種不同熱裂解溫度製備雞糞生物炭，將其以不同施用量施用於田間土壤中，並連續種植四期作的蕹菜，以評估雞糞生物炭對於土壤性質及蕹菜生長之影響。試驗結果顯示，在0.5%及1%的雞糞生物炭施用量下，土壤酸鹼值、導電度、交換性無機態氮、交換性鉀及有效性磷的含量會急遽上升，但這些增加的部分經過四期作種植蕹菜後便會降低，施用雞糞生物炭也會促進蕹菜的生長，尤其是350 oC製備的雞糞生物炭，但1%的施用量卻會造成鈣鎂間的不平衡。
英文摘要 Poultry-litter biochars (PLBs), which were prepared at two pyrolytic temperatures, were applied to the soils of croplands with four consecutive harvests of water spinach to assess the effects of PLBs on the soil properties and the growth of water spinach. The results showed that PLB amendment resulted in an increase of soil pH. The electrical conductivity values, and the concentrations of extractable inorganic nitrogen, exchangeable potassium, and available phosphorus in the soils drastically increased in the 0.5% and 1% biochar-amended soils. However, most of the significant changes in the soil disappeared after four consecutive harvests of water spinach. The growth of water spinach was enhanced in the soils amended with PLBs, especially the one prepared at 350oC. Nonetheless, the application of PLBs at 1% resulted in an imbalance between calcium and magnesium in water spinach.