不同移栽密度和栽插苗数对早稻稻米品质的影响

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引用格式：，等.不同移栽密度和栽插苗数对早稻稻米品质的影响[J].湖南农业科学，2025（6）：16-20，25.DOI：10.16498/j.cnki.hnnykx.2025.006.003

中图分类号：S359.1 文献标识码：A 文章编号：1006-060X（2025）06-0016-05

Effects of Transplanting Density and Number of Transplanted Seedlings per Hill on Rice Quality of Early-Season Rice

YI Shi-wu1，XIONG Yi’，LIU Yi-han²，TANG Jin-ping²，YANG Qing-fei²， WU Jian-jun²，CHEN Hao²，WANG Yue¹

（1.ColegeofoHulUesits;curedulio County，Yueyang 414200，）

Abstract：This studyaims toexplore theefectsof transplantingdensityandnumberof transplantedseedlings perhillon therice quality ofearly-seasonrice.Therice variety'Xiangzaoxian 32' was planted，andasplit-plotdesign wasadopted.The numberof transplantedsdisphllwsakasiplotihelsof1（ingl），2（4dip）d7 seedlings per hil）.The transplanting density was taken as the split-plot， with three levels of M1 （ 25cm×10cm ，M2 25cm×15cm ）， and M3 （ 25cm×20cm ）. The results showed that transplanting density and number of transplanted seedlings per hillhad significant effects on rice quality.The R2M2 treatment showed the brown ricerate 1.41% higher than the R1M3 treatment， the milled rice rate （204号 1.89% and 2.85% higher than the R1Ml and R1M3 treatments，the head rice rate 6.97% and 7.34% higher than the R2Ml and R3M1 treatments， and the aspect ratio 1.01% and 1.52% lower than R1M1 and R1M3 treatments，respectively， all with significant differences. Inaddition，the amylose content of the R2M2 treatment significantly increased by 17.24% compared with that of the R2M1 treatment. Insummary，theR2M2treatmentcanicreasetheamylosecontentwhileimprovingtheprocesingquality（rownicerate，iledice rate，and head rice rate）and appearance quality （chalkiness，chalky grain percentage，and aspect ratio）.

Key Words：rice; transplanting density; number of transplanted seedlings per hil; rice quality

水稻（OryzasativaL.）是重要的粮食作物，在实现全球粮食安全方面发挥着重要作用。（剩余6720字）