哈尔滨市田间阔叶杂草生物学特性及群落调查

实验调查了哈尔滨市及其周边地区旱田、水田和蔬菜田阔叶杂草的发生情况、杂草种类、杂草密度和主要优势杂草,掌握了不同作物田间阔叶杂草群落分布概况。结果表明,旱田(玉米,大豆,小麦)主要阔叶杂草有12科20种;水田以禾本科和莎草科杂草为主且危害较重,阔叶杂草种类虽多但危害不大,共有10科12种;蔬菜田7科8种。各作物田以一年生杂草为主,不同作物田杂草群落有显著差异。

The investigation of bio-attributes and community of broadleaf weeds in field of Harbin

The research investigated the bio-attributes of broadleaf weeds, which included weed germinant condition, weed species, weed density and predominant weeds in glebe, paddy field and vegetable crops fields surrounding district of Harbin. The results indicated that there were 20 chief broadleaf weeds of 12 families in glebe. The main harmful weeds in paddy field were grass weeds and cyperaceous weeds, though there are many species of broadleaf weeds, but not the main harmful weeds, there were 12 broadleaf weeds of 9 families in paddy field and 8 species of 7 families in vegetable fields. Annuals weed is the main species in each field, the weed community had marked diversity among different crop fields.