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比较稗草(Echinochloa crusgalli)、马唐(Digitaria sanquinalis)、苋菜(Amaranthusretroflexus)3种杂草受风作用前后植株上的种子量结果发现,受风作用后比受风作用前种子量显著降低,说明3种杂草植株种子被风吹移动;若将受风作用植株周围50cm内的种子量加进去,仍未改变结果,说明种子被风吹移动至50cm之外;置于室外离3种自生杂草发生区10m以外的空白土壤,2年后发现空白土壤新生杂草中有马唐、稗草、苋菜植株和种子存在。1995年10月至翌年3月于中国农业大学科学园休闲地进行了20次在4级以上的风速中粘截杂草种子试验,截获了稗草、马唐、苋莱3种杂草种子。
The results showed that the amount of seeds in the three weed species before and after wind exposure was significantly lower than that before wind exposure, indicating that the amount of seeds before and after wind exposure was significantly lower than that of the other three species of weeds (Echinochloa crusgalli, Digitaria sanquinalis, Amaranthus retroflexus) The seeds of the three weed plants were moved by the wind. If the seeds within 50 cm of the plants exposed to the wind were added, the result was not changed, indicating that the seeds were moved by wind to 50 cm away from the wind; Grass blank areas 10m away from the soil, 2 years after the discovery of new soil weeds in the blank crabgrass, barnyard grass, amaranth plants and seeds exist. From October 1995 to March of the following year, 20 weeds were weeded in weeds in the wind speed of Grade 4 or above leisurely at the Science Park of China Agricultural University. Three weed seeds of barnyardgrass, crabgrass and amaranth were intercepted.