甘肃省农田杂草区划

根据调查资料,自然条件和各地耕作栽培特点,把我省农田杂草划分成六个草害区。河西灌溉农业草害区主要杂草有藜、野燕麦、田旋花等;陇中黄土丘陵旱作农业草害区主要杂草有猪殃殃、苣荬菜、日本田箭等;洮岷高寒阴湿草害区主要杂草有细穗密花香薷、刺儿菜、萹蓄等;陇南山地农业草害区主要杂草有播娘蒿、繁缕、麦瓶草等;陇东黄土高原旱作草害区主要杂草有雀麦、离子草、狗尾草等。明确了各地主要杂草种类与危害,为制定化学防除策略提供了依据。

THE DIVISION OF FIELD WEEDS IN GANSU

Based on the natural condition and crop cultural habits in different areas in Gansu, five field weeds belts have been classified: the Hexi irrigation farming weeds belt, mainly consisting of Lambsquarters, Wild Oat, Field Bindweed; the central Gansu weeds belt in loess hills mainly consisting of Tender Catchweed Bedstraw, Perennial Sowthistle and Japanese Morningglory; the high-elevation weeds belt in clod and humid area of the Taohe river and Mingshan Mountain, mainly consisting of Elsholtzia Patrini, Common Cephallanoplos and Wire-grass; the south Gansu weeds belt in Mountainous areas, mainly consisting of Flixweed Tansymustard, Chicrweed and Silens; and the eastern Gansu weeds belt in the loess plateau mainly consisting of Bromus, Chorispora and Green Bristlegrass. The major weeds species in different areas and their hazards are shown in this paper so that effective measures can be taken for chemical control.