Comprehensive Benefit Analysis of Different Agroforestry Model of Carya illinoensis in Jianghuai Hilly Region
[Objective]In order to explore the comprehensive benefits of agroforestry model of Carya illinoensis Koch in Jianghuai hilly region.[Method]A field trial was conducted with five kinds of agroforestry models,namely Carya illinoensis Koch-soybean-rapeseed,Carya illinoensis Koch-soybean-wheat,Carya illinoensis Koch-maize-rapeseed,Carya illinoensis Koch-maize-wheat,and Carya illinoensis Koch-oil peony,and pure Carya illinoensis Koch plantation as control.[Result]The results showed that the Carya illinoensis Koch-soybean-rapeseed,Carya illinoen-sis-soybean-wheat,and Carya illinoensis-oil peony models all promoted the growth of Carya illinoensis,while the other two models inhibited it compared to control.The increase income of different agroforestry models were in the order of Carya illinoensis-oil peony(26 256.0 yuan/hm2)>Carya illinoensis-soybean-wheat(11 040.0 yuan/hm2)>Carya illinoensis-soybean-rapeseed(10 950.0 yuan/hm2)>Carya illinoensis-maize-wheat(7 953.6 yuan/hm2)>Carya illinoensis-maize-rapeseed(7 863.6 yuan/hm2).[Conclusion]Considering compre-hensively,the Carya illinoensis-oil peony model had the best comprehensive benefits.It could be recommended according to local conditions.