Abstract: 【Objective】Select japonica rice varieties that are suited for rice and shrimp co-cropping in Northern Jiangsu. Promote healthy and sustainable development of the green rice industry in rice and shrimp co-cropping model in this area.【Methods】From 2018 to 2020,a variety comparison experiment was conducted in the rice and shrimp co-cropping field in Suyu District,Suqian City in Jiangsu Province,using 16 japonica conventional rice varieties（lines）as experimental materials. During the whole growing season,deep-water management was carried out to compare the growth period,lodging resistance,yield,and quality of each variety（line）.【Results】Nanjing 5718,Xudao No.9,and Sidao No.16 had compact plants,strong lodging resistance,and average rice quality. Huaidao No.20 and Sidao No.17 had strong tillering ability and fast grain filling,with yields of 9 985.39 and 9 805.43 kg/hm²,respectively,which were significantly higher than most varieties. Sidao 301 had higher yield of 9 614.49 kg/hm²,with large,gleaming and great quality rice grains but longer growth period.【Conclusion】Nanjing 5718,Xudao No.9,and Sidao No.16 had high promotion value in rice and shrimp co-cropping in Northern Jiangsu,and could be used as suitable japonica rice varieties with good quality. Huaidao No.20 and Sidao No.17 could be promoted as high-yield varieties. Sidao 301 could be planted in advance and promoted as a superior quality rice variety.

Key words: Rice and shrimp co-cropping, Japonica rice, Variety, Comparison experiment, Northern Jiangsu