CAJ | 학술논문

以早稻品种中嘉早17和中早39为材料，设置5个不同氮肥水平（纯氮0、0.8、1.6、2.4、3.2 g/盘），探讨不同氮肥水平下水稻机插秧苗素质差异及对产量的影响。结果表明，随施氮量增加，秧苗含氮量增加，但成苗率降低，氮素积累量为先增加后下降趋势，在2.4 g/盘处理达最大；不同施氮量对两品种秧苗素质的影响存在差异，适宜的施氮量有利于提高秧苗素质，以27 d秧龄的影响较大。两品种不同施氮量下水稻产量均以1.6 g/盘的处理较高，与不施氮处理相比，增幅分别达24.14%、7.73%，产量增加主要与有效穗数的增加有关。综合这2个品种秧苗素质及机插后的产量效应，确定每盘施氮量宜为1.6～2.4 g。
이조도품충중가조17화중조39위재료，설치5개불동담비수평（순담0、0.8、1.6、2.4、3.2 g/반），탐토불동담비수평하수도궤삽앙묘소질차이급대산량적영향。결과표명，수시담량증가，앙묘함담량증가，단성묘솔강저，담소적루량위선증가후하강추세，재2.4 g/반처리체최대；불동시담량대량품충앙묘소질적영향존재차이，괄의적시담량유리우제고앙묘소질，이27 d앙령적영향교대。량품충불동시담량하수도산량균이1.6 g/반적처리교고，여불시담처리상비，증폭분별체24.14%、7.73%，산량증가주요여유효수수적증가유관。종합저2개품충앙묘소질급궤삽후적산량효응，학정매반시담량의위1.6～2.4 g。
Effects of different nitrogen level (0, 0.8, 1.6, 2.4 and 3.2 g per seedling tray)on seedling quality and grain yield of double early rice zhongjiazao17 and zhongzao39 with machine transplanted were studied. The results showed that progressively higher rates of ammonium sulfate caused a gradual increase in nitrogen content of rice seedlings, but decreased the seedling rate, and N accumula-tion had a tendency with increasing and then declining, and the maximum value was at N3 treatment. Effects of different N application on seedlings quality were different, the suitable N application could increase rice seedlings quality, the higher influence was obtained in 27 day age seedlings. The yield increased by 7.73% and 24.14% with 1.6 g N application per seedling dish constrast to no nitrio-gen treatment, which is related to its effective panicles. Considered the seedling quality and grain yield of machine transplanted rice, the N application per seedling dish was suggested from 1.6 to 2.4 g per tray.