本省水稻田土壤之生成研究 紅棕壤水稻田土壤生成之研究

Abstract

本研究之土壤，選自桃園縣、中壢鎮、南勢附近，包括原爲紅棕壤之旱作茶園，與改作水稻田後，逐年按期作於收穫後採集之土壤樣本，歷經四年半，研究其剖面形態，分析各層代表土壤之理化性質計有機械組成、pH值、全鐵及游離鐵、二氧化錳、有效矽、磷及鉀、有機質、全氮量及陽離子交換性質等十一項。 1. Nine soil profiles were collected from the reddish brown latosols of Nam-she, Chungli, Taoyuan, including the original tea plantation dry field, and its altered paddy field which were sampled after the first crop and the second crop each year from 1964-1968 respectively. Soil morphology of those profiles and their physico-chemical properties were studied. Items of this experiment consist of mechanical analysis, pH value, total iron free iron, manganese dioxide, available silica, available potash and phosphoric oxide, organic matter, total nitrogen and cation exchange capacity etc.