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稻田间养河蟹为了探索北戴河区稻田养河蟹的技术措施，为生产推广应用提供科学依据，１９９４年农业技术推广站搞了三亩稻田养蟹试验，亩产河蟹３８．４公斤，平均单只重１１５克，亩产值３８００多元，扣除费用，仅这一项亩纯收入９３０多元，此外还亩收水稻３５０公斤。...
In order to explore the technical measures for raising crabs in paddy fields in Beidaihe area and provide a scientific basis for the popularization and application of the products, in 1994, the agricultural technology extension station engaged in crab farming in three acres of paddy fields and produced 38.4 kilograms of crab per mu 115 grams, more than 3800 yuan per mu output value, net of expenses, only a single net income of more than 930 yuan, in addition to mu 350 kg of rice received. ...