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教授】
| 論文篇名 | 英文：Effect of vermicompost amendment on the accumulation and chemical forms of trace metals in leafy vegetables grown in contaminated soils 中文：施用蚓糞堆肥對於種植於受污染土壤中葉菜類累積重金屬濃度及化學型態之影響 |
| 期刊名稱 | Int. J. Environ. Res. Public Health |
| 發表年份,卷數,起迄頁數 | 2021, 18(12), no.6619 |
| 作者 | Yen, Yu-Shan; Chen, Kuei-San; Yang, Hsin-Yi; Lai, Hung-Yu(賴鴻裕)* |
| DOI | 10.3390/ijerph18126619 |
| 中文摘要 | 臺灣受重金屬污染土壤之造成原因常與使用受污染水源灌溉有關係，蚓糞堆肥已被證實可以改變土壤重金屬之有效性，因此本研究選用兩處受重金屬污染之土壤種植小白菜及萵苣，以評估施用蚓糞堆肥對於葉菜類生長、累積重金屬、化學型態及攝食健康風險之影響。盆栽試驗結果顯示，蚓糞堆肥之施用可以增加土壤之有機質、有效性磷、交換性鎂及交換性鉀含量，進而提升作物之生長表現，累積之重金屬濃度也會降低，尤其是鎘濃度(可以降低60-75 %)。蚓糞堆肥對於重金屬化學型態之影響與重金屬之種類、濃度及作物種類有關，川燙亦可以降低具高移動性化學型態的重金屬濃度。然而，儘管施用蚓糞堆肥可以降低攝食作物所造成之健康風險，鎘仍然比其他重金屬具有較高的健康風險。 |
| 英文摘要 | (1) Background: Trace metal (TM) contamination of farmland soil in Taiwan occurs because factories dump wastewater into irrigation ditches. Since vermicompost affects the bioavailability of TMs, the objective of this study was to evaluate its effects on the accumulation of growth of TMs in leafy vegetables. (2) Methods: Two TM-contaminated soils and different types of pak choi and lettuce were used and amended with vermicompost. Besides soil properties, the study assessed the influence of vermicompost application on the growth, accumulation, and chemical forms of TMs and on the health risks posed by oral intake. (3) Results: Vermicompost could increase the content of soil organic matter, available phosphorus, exchangeable magnesium, and exchangeable potassium, thus promoting the growth of leafy vegetables. The accumulation of four TMs in crops under vermicompost was reduced compared to the control, especially for the concentration of cadmium, which decreased by 60–75%. The vermicompost’s influence on changing the chemical form of TMs depended on the TM concentrations, type of TM, and crop species; moreover, blanching effectively reduced the concentrations of TMs in high-mobility chemical forms. Although vermicompost mostly reduced the amount of cadmium consumed via oral intake, cadmium still posed the highest health risk compared to the other three TMs. |
| 發表成果與本中心研究主題相關性 | 永續農業需要使用對環境友善之資材，而蚓糞堆肥即為適用之選項之一。研究結果顯示，土壤施用蚓糞堆肥不但可以增加肥力及作物之生長，對於增加土壤碳匯、降低對重金屬之累積濃度及所產生之健康風險亦有顯著之效果，本研究結果可作為未來田間應用之參考。 |
