蟹池栽种水草和投放螺蛳是养大规格蟹、优质蟹和生态蟹的关键措施,也是提高养蟹产量和经济效益的重要手段。1.水草和螺蛳的主要作用天然条件下,河蟹喜水草丛生、水质清新的环境。人工养蟹因经常投饵,剩渣残饵及排泄物可导致水质变肥,溶氧量降低,影响河蟹正常生长。种草投螺,水 Crab ponds planted water plants and put snail is to raise large-size crabs, high-quality crabs and ecological crabs of the key measures, but also improve crab production and economic efficiency of the important means. 1. The main role of aquatic plants and snails Natural conditions, the crab hi grass, fresh water environment. Artificial crabs due to regular feeding, residual residue bait and excrement can lead to water quality become fat, dissolved oxygen decreased, affecting the normal growth of crabs. Sowing grass and water, water