关键词: 水稻, 种植方式, 产量, 稻米品质, 豫南地区

Abstract: Two japonica rice varieties with good eating quality（Nanjing 9108 and Nanjing 5718）wereselected to study the effects of different rice planting methods［seedling‑throwing（ST），carpet seedlings mechanical transplanting（CSMT）and direct‑seeding（DS）］on the yield and quality，and explore the suitable planting methods for japonica rice varieties with good eating quality to achieve high yield and quality，so as to provide technical support for the cultivation and promotion of japonica rice varieties with good eating quality in southern Henan Province.The results showed that the mean grain yield of the two tested varieties of ST treatment was the highest，followed by CSMT treatment，and their yields significantly increased by 5.20% and 3.18% compared with DS treatment respectively.The higher grains number per panicle and setting percentage were the main reasons for the high grain yield achieved by CSMT and ST treatments.In terms of rice quality，there was no significant difference in brown rice rate，milled rice rate and head rice rate between ST treatment and CSMT treatment，but these indexes were all significantly higher than those of DS treatment. There was no significant difference in grain shape among the three treatments，but the grain width of the two varieties all showed ST>CSMT>DS.The chalkiness rate and chalkiness degree all showed ST>CSMT>DS，and there were significant differences among the three treatments.The amylose content showed DS>CSMT>ST，and there were significant differences among the three treatments.The protein content and taste value showed the opposite rule to the amylose content，which were the highest under ST treatment and the lowest under DS treatment，and the differences of protein content and taste value between ST treatment and DS treatment were significant.The characteristic values of RVA spectrum，such as peak viscosity，hot paste viscosity，final viscosity and setback，were the highest under DS treatment and the lowest under ST treatment，while breakdown，consistence value and pasting temperature were the highest under ST treatment and the lowest under DS treatment.In conclusion，different planting methods have significant effects on yield and quality of japonica rice varieties with good eating quality，among them，ST and CSMT methods can improve the milling quality and eating quality when guaranteeing the grain yield，and can be used as the planting methods for production and promotion of japonica rice varieties with good eating quality in southern Henan Province，but it may be necessary to pay attention to the improvement of chalkiness of rice under these planting methods.

Key words: Rice, Planting method, Yield, Rice quality, Southern Henan