Abstract:

In order to promote the strategy of “change from indica to japonica”in Jiangxi Province, meet the production demand of japonica rice in northern Jiangxi Province, and increase farmers' income and agricultural production efficiency, in this experiment, four conventional japonica rice varieties bred by the Rice Institute of Jiangxi Academy of Agricultural Sciences were selected, and Ganningjing 1 was selected as the control variety. Under the same field management conditions, the growth period, tillering, agronomic traits, yield components and yield were comprehensively compared. The results showed that 21Q251 had poor production performance and was not recommended to be popularized. 21Q216 showed the characteristics of strong tillering ability, high heading rate, high seed setting rate, good color transformation at ripening stage, strong disease resistance, and slightly low yield level. It is suggested that basic seedlings should be inserted enough and tillering fertilizer should be applied early to ensure sufficient effective panicle. Ganwanjing 688 has good high yield and stable yield performance, showing strong tillering ability, high heading rate, high seed setting rate, good color transformation at ripening stage, strong lodging resistance and disease resistance, so it is recommended to be popularized in northern Jiangxi Province.

Key words: northern Jiangxi Province, production demand, conventional japonica rice, production performance, spread planting