台灣與日本土壤有機質的分解聚積模擬與肥力維持

Abstract

本報告之目的是以台灣三處與日本二處長期試驗資料，檢討不同環境及耕作制度下，連續施用一定量作物殘體或有機質肥料後，土壤中有機質的分解與累積的情形，並嘗試以一階反應方程式模擬之，以概括了解其長期趨勢，進而估算維持不同土壤有機質含量所需施用有機質肥料施用量。 This paper reviews changes of organic matter content in the soils of some long-term experiments conducted in Taiwan and Japan, where different rates of crops residues or organic manure had been applied continuously. The decomposition and accumulation of organic matter in the soils were simulated as the first order reaction and the model was used to estimate the input of organic manure required to maintain different levels of organic matter in the soils.