随着种植业结构调整，鲜食玉米（尤其是糯玉米）发展十分迅速，２００１年南京市已扩种到８０００hm２，且种植面积相对集中。由于鲜食糯玉米春、夏、秋种植茬口复杂，连作面积大，因而杂草种类多（约有２３科５５种）、发生量大、危害重，造成的玉米产量损失在１５％左右，而? With the restructuring of planting industry, the development of fresh corn (especially waxy corn) has been very rapid. In 2001, Nanjing has expanded its planting area to 8000hm2 and its planting area is relatively concentrated. Since the fresh-eating waxy corn is complicated in spring, summer and autumn and has large continuous cropping area, the weed species is very large (about 23 families and 55 species) with large amount of occurrence and heavy damage, resulting in about 15% loss of corn yield. However, ?