河北省衡水市麦田禾本科杂草发生情况调查

Investigation of Grassy Weeds in Wheat Fields in Hengshui City of Hebei Province

采用随机取点和倒置"W"型取样相结合的方法,对河北省衡水市麦田禾本科杂草的发生情况进行了调查。结果表明:衡水市麦田禾本科杂草主要为雀麦和节节麦。其中,雀麦普遍发生,且在多数地区已经上升为主要杂草,在衡水郊区、景县、深州市和饶阳县的相对多度分别为76.5%、11.9%、45.3%和16.2%;节节麦发生不均,在景县的相对多度为40.2%,是仅次于播娘蒿的第2位主要杂草,在饶阳县节节麦的相对多度为2.7%,在衡水郊区和深州市没有发现节节麦为害。

The occurrence of grassy weeds in wheat fields in different counties（cities） of Hengshui City was investigated by the methods of random sampling and inverted W-sampling pattern.The results showed that the types of grassy weeds in Hengshui City were Bromus japonica and Aegilops tauschii.Bromus japonica was a general and main species.The relative abundance in suburbs of Hengshui,Jing County,Shenzhou City and Raoyang County were 76.5%,11.9%,45.3%,16.2% respectively.The occurrence of Aegilops tauschii was non-uniform,it was the second weed following Descurainia Sophia（L.） Schur and its relative abundance was 40.2% in Jing County,the relative abundance was 2.7% in Raoyang County while it was not found in suburbs of Hengshui and Shenzhou City.