(第07號)臺灣省土壤肥力概述

Abstract

研究土壤學之實用目的，在改良土質，並適當施用肥料，以求農產物之產量增加，品質優良。臺灣之產業以農業為主，而農作物之生長，唯土壤肥料是賴，故土壤肥力之研究，至為重要。前年春，本所與臺灣肥料公司合作，成立土壤肥力實驗室，由本所張技正守敬主其事；其初步工作，為對臺灣之土壤肥力作一概略之研究，歷時二載，始竣其事。本報告即此研究之成果也。 本報告中所包括之分析原始數據，數以萬計，而田間試驗之結果，亦收集備至，相互參證，以闡明臺灣土壤之肥力，臺灣土壤肥力之大要，悉備於此，可作進一步研究之參考。 Soil productivity is the capacity of the soil to grow plants. It is controled not only, by the properties of the soil itself but also by the climatic and biotic conditions under which the soil exists. Soil fertility has a more limited meaning. It concerns primarily with the soil factors, of which the texture, the organic-matter content the pH value, the nitrogen, the available phosphorus and the available potash are perhaps the most important ones. Although these six factors are not the sufficient conditions in predicting the productivity or in diagnosis of the nutrient deficiency of the soil, yet they are the necessary ones.