北海道後志地方の馬鈴薯畑の雑草群落

概要

論文の詳細を見る
1. The structure of weed communities of cultivated fields of Solanum tuberosum in Shiribeshi district, Hokkaido was surveyed during 1952 and 1953. 2. As a result or the investigation about 40 kinds of weeds were found. Commelina communis continues to occupy a dominant position from spring to autumn. However, Digitaria violascens, D. adscendens, and Polygonum nepalense, whose area occupied is comparatively small in spring, attains a high position, being next to Commelina communis from summer to autumn. 3. Commelina communis, Digitaria violascens, D. adsccendens, Polygonum nepalense, Rumex Acetosella, and Sonchus brachyotis, are the most harmful weeds in this district. These weeds greatly hinder the growth of the crops, and also necessitate great efforts in weeding.
日本生態学会の論文
1955-03-31