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本文以具体实例剖析了稻田养蟹者在防止蟹种性早熟中，采取了加大投放密度、停止投饵、延长注排水时间等技术措施，控制蟹种营养以达到予防蟹种性早熟之目的。但由于上述技术措施实施不当，结果造成河蟹自身营养不足，同时也破坏了田内稻与蟹之间达成的一定的、合理的生态平衡，致使河蟹生病，水稻被河蟹大量残食。其次，笔者还指出了养蟹田内的边沟工程面积占稻田面积太少，致使稻与蟹之间不能在同一水体内建立起合理的生态平衡系统，是造成蟹种生病的生态因素之一。最后笔者指出了稻田养蟹不同于其它水体养蟹的几点特征，并提出稻田养蟹者走出误区的几点具体措施。
In this paper, the specific examples of the crab in paddy field in the prevention of precocious crab species, taken to increase the delivery density, stop feeding, to extend the drainage time and other technical measures to control the nutrition of crab species in order to achieve the purpose of anti-crab species precocious . However, due to improper implementation of the above technical measures, as a result, crabs themselves lack nutrition, meanwhile they also destroy the certain and reasonable ecological balance reached between paddy fields and crabs, causing the crabs to become sick and leaving a large amount of rice and crabs to eat. Secondly, the author also points out that the area of the ditches in the crab farming field accounts for too little area in the paddy field, which makes the rice and the crab not establish a reasonable ecological balance system within the same water body, which is one of the ecological factors that cause sick crabs. Finally, the author points out some characteristics of crab farming in paddy field which is different from crab farming in other water bodies, and puts forward some concrete measures for crab farming in paddy field.