【摘要】 2019年4月下旬—5月中旬,笔者对芮城县3镇9村90块麦田杂草发生及危害情况进行调查。调查发现禾本科、菊科、十字花科、锦葵科、玄参科等14科26种2 776株杂草,平均密度13.71株(蘖)/m2,主要杂草种类多为轻发生,个别地块中等发生。通过比较不同生态区域杂草发生情况发现,芮城县沿山旱地杂草种类密度大于平垣水地和河滩地。更多还原

【Abstract】 From late April to mid May 2019, the occurrence and damage of weeds in 90 wheat fields in 9 villages of 3 towns in Ruicheng County were investigated. The results showed that 2 776 weeds belonging to 26 species in 14 families,including Gramineae, Compositae, Cruciferae, Malvaceae and Scrophulariaceae, had an average density of 13.71 plants per m2. Most of the main weeds occurred lightly and moderately in some plots. By comparing the occurrence of weeds in different ecological regions, it was found that the species density of weeds in dry land along the mountain in Ruicheng County was higher than that in plain plain water land and river beach land.更多还原