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去年春，我市产业结构调整中为了既节省开挖投资又便于复耕轮作，利用低产田稍作改造成浅水池养殖的面积近3万亩。同时由于近几年来河蟹养殖病害严重，我们在新芳镇马塘村开展了低产田改造成浅水池的河蟹生态养殖试验，现将具体结果报告如下：一、材料与方法：1.池塘基本要求：
Last spring, the city’s industrial restructuring in order to save both excavation investment and facilitate the re-rotation, the use of low-yield fields slightly transformed into a shallow pond farming area of nearly 30000 acres. In the meantime, due to the serious disease of crab breeding in recent years, we carried out the experiment of ecological culture of crab in low-yielding fields transformed into shallow water in Ma Tang Village, Xin Fang Town. The specific results are reported as follows: I. Materials and Methods: 1. Basic requirements of pond :