辽宁滨海盐碱稻区稻蟹模式评价与效益分析

Evaluation and Benefit Analysis of Rice-Crab Cultivation Modes in Coastal Rice Areas of Liaoning

为深挖稻蟹种养模式潜力,2019—2021年在辽宁滨海盐碱稻区对水稻单一种植模式(MR)、水稻+成蟹种养模式(RC)、水稻+扣蟹种养模式(RYC)、水稻+成蟹种养生态减施模式(ORC)和水稻+扣蟹种养生态减施模式(ORYC)的水稻产量、稻米品质及稻蟹投入产出进行了试验和调查分析。结果表明,不同种养模式间水稻理论产量、实际产量及稻米加工品质差异均不显著;稻蟹种养模式显著提高经济效益;生态减施模式在提高生物多样性的同时增加经济效益;生态减施模式下成蟹种养较扣蟹种养具有更高的市场稳定性。

The rice yield,quality and rice/crab economic output of rice monoculture mode,rice-crab co-culture mode with mature crab,rice-crab co-culture mode with juvenile crab,rice-crab co-culture ecological reduction mode with mature crab and rice-crab co-culture ecological reduction mode with juvenile crab in 2019—2021 in coastal saline-alkali rice area in Liaoning Province were studied.The results showed that there was no significant difference between theoretical yield,actual yield and processing quality of rice among different mides.Rice-crab co-culture mode could significantly improve economic benefits;ecological reduction mode could improve biodiversity and increase economic benefits.Compared with rice-crab co-culture ecological reduction mode with juvenile crab,rice-crab co-culture ecological reduction mode with mature crab had higher market stability.