水稻—红螯螯虾共作模式与红螯螯虾传统池塘养殖模式对比试验

Contrast experiment of rice-Cherax quadricarinatus culture model and traditional pond culture model of Cherax quadricarinatus

对水稻—红螯螯虾共作和红螯螯虾传统池塘养殖两种模式进行对比分析,结果表明:稻虾共作模式下红螯螯虾回捕率高于传统养殖模式,传统养殖模式红螯螯虾平均亩产量略高于稻虾共作模式,种养成本高于稻虾共作模式。虾苗放养时间早、平均放养密度低的南3#稻虾共作田块红螯螯虾生长规格明显高于其它田块(池),至10月底,该田块虾平均体长、体质量分别比南2#稻虾共作田块高15.1%、60.5%,比北1#传统养殖池高18.5%、66.6%;经济效益以及投入产出比也最高。相近苗种放养模式下,稻虾共作模式红螯螯虾生长速度高于传统养殖模式,两种模式投入产出比例差异不大。

A comparative analysis of two models of rice-Cherax quadricarinatus and traditional pond culture of Cherax quadricarinatus was conducted.Results showed that the shrimp recovery rate and breeding cost of the traditional pond culture model were higher than those of rice-shrimp model.The shrimp size,economic benefit and input-output ratio of the rice-shrimp field with early stocking time and low stocking density were higher than those of other field or pond.Until the end of October,the average body length and weight of the shrimp in the south no.3 field were 15.1%and 60.5%higher than those in south no.2 field,and 18.5%and 66.6%higher than those in north no.1 pond.Under the similar stocking model,the shrimp growth speed of rice-shrimp culture model was higher than that of traditional pond culture model and there was little difference in the input-output ratio between the two models.