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广西南宁市郊稻田历年偶有螃蟹为害禾苗,但1987年8月中旬至9月上旬,沙井、那洪、石埠、亭子等4乡14个村的1万亩初插晚稻突遭螃蟹危害,其中需补插 1/10以上的田块有1200亩。 成群的螃蟹以螫足钳切初插不久的稻苗,断口在齐水面处平整如刀切。田间可见大片禾苗全被切断,个别田块全田被毁。深水田受害重,多者每亩2990—6730头,以中低龄蟹居多。那洪乡留村三队有晚稻70
Nanning, Guangxi rice paddies over the years crab rare occasional crab damage seedlings, but in mid-August 1987 to early September, manholes, Nah Hong, Shibu, pavilions and other 4 villages in 14 villages of 10,000 acres of early rice inserted sudden late crab damage, including Need to make up more than 1/10 of the plots have 1,200 acres. Flocks of crabs to foot cut into the early rice paddies, fracture in Qi water surface at the knife cut. Broad field of seedlings seen in the field were all cut off, individual field whole field destroyed. Heavy deep-harvested fields, mostly 2990-6730 acres per acre, mostly in low-middle-aged crabs. Hong village left three teams have 70 late rice