The synecological investigation of weeds in acid-soil and limeston regions. (1)

[摘要] Summary 1. During the springtime of 1948 an investigation was made on waste, reclaimed, and farm lands in acid-soil as well as limestone regions, in order so determine the relation between the distribution of weeds and the reaction of soil on which they grow. 2. The chief species of weeds which grow on waste, reclaimed, and farm lands were as follows. [table] 3. The following species were abundant on acid soil regions or limestone regions. [table] 4. In proportion as the soil matured the therophytes, weeds of poor sociability, of high constancy and in bloom at that time increased in number of species.

[学科分类] 农业科学（综合）