水稻-小龙虾-螃蟹共生轮养经济效益分析

Economic Benefit Analysis of Rice-Crayfish-Crab Co-breeding

以水稻、小龙虾、螃蟹为研究对象,探讨水稻-小龙虾-螃蟹共生轮养模式的经济效益。选择11个水稻品种进行生育期、产量比较试验并方差分析;以水稻单作为对照,研究水稻-小龙虾-螃蟹共生轮养的经济效益。桃优香占、华润2号、粤农丝苗、狮山3号生育期较短;丰两优香1号、玉珍香、福稻88、香润1号、天优1号生育期中等;稻虾1号、南粳505生育期较长;桃优香占、丰两优香1号、华润2号、福稻88产量均比对照南粳505高,且达极显著水平;稻虾1号、天优1号与对照产量差异不显著。水稻-小龙虾-螃蟹模式经济效益39 580元/hm^2,水稻单作经济效益18 575元/hm^2。水稻-小龙虾-螃蟹模式经济效益是水稻单作的2.13倍。

Rice, crayfish and crab were studied to explore the economic benefits of rice-crayfish-crab co-breeding. 11 rice varieties were selected for comparison test of growth period and yield.The economic benefits of rice-crayfish-crab co-breeding were studied. The growth periods of Taoyouxiangzhan, Huarun 2, Yuannong silk miao and Shishan 3 were shorter. Fengliangyouxiang1, Yuzhenxiang, Fudao88, Xiangrun No.1, Tianyou No.1 medium growth period;the growth period of rice Shrimps No. 1 and Nanjing 505 was longer. The yields of Taoyouxiangzhan, Fengliangyouxiang 1, Huarun 2 and Fu 88 were all higher than that of control Nanjing 505, and reached extremely significant levels. There was no significant difference between Shrimp No. 1, Tianyou No. 1 and control. The economic benefit of rice-crawfish-crab model was 39,580 yuan/hm^2, and the economic benefit of rice mono-cropping was 18,575 yuan/hm^2. The economic benefit of rice-crayfish-crab model was 2.13 times than that of rice alone.