萍水象(Bagous sp.)又名萍象(虫甲) 、红萍虫、红虫,属鞘翅目象虫科,是浙南温州地区春萍繁殖阶段和早稻养萍期间为害绿萍的主要害虫。萍水象的成虫、幼虫均能为害绿萍,被害萍体初呈发绿色,后变黑紫色,无光泽,个体破碎,生长停滞,直至霉烂致死。据调查,萍水象尚能为害槐叶萍。虫害严重的萍田,一平方尺萍苗内成虫、幼虫多达千头左右,在二、三天内就能导致全田萍苗毁灭。因此,及时防治萍水象,是早稻养萍成败的关键之一。现将萍水象的初步观察结果,整理如下: Pingous (Bagous sp.), Also known as Pingxiang (insects), red duckweed, red worms, Coleoptera is a family of insects, is the southern Zhejiang Wenzhou area during the breeding stage and early rice duckweed during the main green Ping Ping Pests. Pingshui elephants, larvae can damage Greenpeace, the victim was first showed a green body Pingtong, after the black-purple, dull, individual fragmentation, growth stagnation, until the rotten death. According to the survey, Pingshui still can harm Huai Ye Ping. Ping Tian pests, a square foot Pingmiao adults, larvae up to a thousand or so, in two or three days can lead to the whole field of Pingmiao destruction. Therefore, the timely prevention and treatment of Pingshui is one of the keys to the success or failure of early rice cultivation. Pingshui now the initial observations, sorted as follows: