Analysis of economic benefit of rice-ratooning rice-crayfish integrated cultivation in paddy field
In order to make full use of light and temperature resources,on the basis of integrating shrimp in rice field model,the combination of rice-crayfish comprehensive planting and breeding and ratooning rice planting was carried out,and the rice-ratooning rice-crayfish comprehensive planting and breeding technology model was studied.Four kinds of models were set up,including planting middle rice(MR),planting ratooning rice(RR),middle rice-crayfish comprehensive(MRC),rice-ratooning rice-crayfish comprehensive(RRC),and the effects of different models on rice-crayfish yield and economic benefits were analyzed.The results showed that(1)The annual rice yield of ratoon rice was higher than that of middle rice,the yield of ratoon rice was about 1/4 of that of main crop rice,and the rice yield of RRC model was the highest.(2)The increase of rice yield in MRC and RRC models was mainly achieved by higher grain number per spike and 1 000-grain weight.(3)The output value,profit and output-input ratio of rice-ratoon rice-crayfish comprehensive planting and breeding model were the highest,which were 102 754 yuan/hm2,64 704 yuan/hm2 and 2.70 respectively.On the whole,the combination of rice-shrimp integrated planting and breeding model and ratooning rice model could improve the total rice yield,reduce the production cost,and have better economic benefits,it is a resource-efficient and environment-friendly planting and breeding method.
ratooning ricecrayfishrice-crayfish co-cultureeconomic benefits of agicuture
万方数据
维普
