“土壤科学的进展”是一种不定期刊物,从1985午发行以来,到1986年夏季我们已经收到三卷(第四卷11月份刚到)。每卷都有B.A.斯图尔特的前言(约一页半),三卷的前言大致相同,旨在说明编辑这个刊物的动机、方法以及刊物的内容等。现在把它扼要地译在下面。编者首先指出,1930年世界上人口为20亿,1960年为30亿,目前(1985)为46亿,估计本 Progress in Soil Science is an occasional publication that has received three volumes by the summer of 1986 since the publication in 1985 (Volume IV arrived in November). Each volume has B.A. Stuart’s foreword (about one and a half), three volumes of the preface about the same, designed to explain the motivation for editing this publication, methods and content of the publication. Now briefly translate it below. The editor first pointed out that in 1930 the world’s population was 2 billion, 3 billion in 1960 and (4.6) to 4.6 billion at present (1985)