施用农肥对养蟹稻田生态环境的影响

Effects on the Ecological Environment of Paddy Field with Crabs Keeping by Applying Manure.

试验结果表明,施用农肥可提高养蟹田的水温、表土温和氧化还原电位,抑制还原物积累。这些生态因子的改变,可为河蟹提供良好的生长环境,有利于培育大蟹和防止蟹病发生。不同的农肥对不同的重金属污染物具有不同的调节作用。针对具体养蟹田的污染物状况,可通过施用不同的农肥,来减轻对河蟹的污染。

The results of the experiment shows： to apply manure in crab paddy field can improve the water and surface soil temperature, oxido-reduce the electric potential, restrain the original accumulation. The change of these ecological elements can provide good growing conditions for crabs, can help to raise big crabs and prevent diseases happening. Different kinds of manure have different adjustment for different heavy metal pollutants. Being aimed at the pollutants conditions in crab paddy field, to apply different kinds of manure can lighten the pollution of river crabs .