作物生长与土壤有效养分关系之研究

一、引言观察施用某种肥料,所表现之作物生长状况,及秤其产量而决定某种作物在某种土壤气候及环境下,需要某种肥料概况,此为一般研究肥效之最普通方法。若在田间详细观察作物之生长情况,进而研究生长地土壤内各种肥料有效养分之富缺程度及其他影响因子尚少,著者等认为地面上农作物生长良窳与土壤有效养分之供给有密切之关系,故本此目的在田间详细观察作物生长状况后,即采取土样,加以分析,并施用同样养分量栽培同样作物作对照比较,求其互相关程度,此本研究之目的也。

A Study of Plants Growth in Relation to Available Plant Nutrient Contents of Soils

It is well known that the supply of fertilizers and manures to the soils is considered by the farmers to be most important in agricultural practice.The writers were much interested in researching the factors which affect the plant growth. Among them the available plant nutrients attracted their attention.The work done fell in two parts in convenience.The first part of work was stressed to the observations of plant growth and soil analyses in order to secure general conception about the correlation between t...