CAJ | 학술논문

以超级稻‘两优616’为材料，研究不同播种期对‘两优616’产量及稻米品质的影响。试验表明：随着播期的推迟，‘两优616’的穗粒数、结实率明显下降，产量也逐步降低，5个播种期中6月4日播种的超级稻‘两优616’产量最高，7月6日播种的产量最低。从稻米品质来看，5个播种期‘两优616’均表现出良好的品质性状，稻米理化指标得分均较高，其中7月6日播种的‘两优616’得分最高；所有播种期‘两优616’糙米率、精米率、整精米率、透明度、碱消值、胶稠度和直链淀粉含量等7项指标全部达到优质标准。试验还表明：随着播种期推迟、灌浆结实期日均温降低，‘两优616’整精米率提高，垩白率减少，垩白度下降，理化指标得分逐步提高，稻米品质得到提升。因此在生产上可以通过适当调整‘两优616’的播种期，在保证产量的前提下使其灌浆结实处在一个相对有利的时期，从而提升‘两优616’的稻米品质，促进超级稻‘两优616’优质高产栽培及其生产上大面积推广运用。
이초급도‘량우616’위재료，연구불동파충기대‘량우616’산량급도미품질적영향。시험표명：수착파기적추지，‘량우616’적수립수、결실솔명현하강，산량야축보강저，5개파충기중6월4일파충적초급도‘량우616’산량최고，7월6일파충적산량최저。종도미품질래간，5개파충기‘량우616’균표현출량호적품질성상，도미이화지표득분균교고，기중7월6일파충적‘량우616’득분최고；소유파충기‘량우616’조미솔、정미솔、정정미솔、투명도、감소치、효주도화직련정분함량등7항지표전부체도우질표준。시험환표명：수착파충기추지、관장결실기일균온강저，‘량우616’정정미솔제고，성백솔감소，성백도하강，이화지표득분축보제고，도미품질득도제승。인차재생산상가이통과괄당조정‘량우616’적파충기，재보증산량적전제하사기관장결실처재일개상대유리적시기，종이제승‘량우616’적도미품질，촉진초급도‘량우616’우질고산재배급기생산상대면적추엄운용。
With super rice‘Liangyou 616’ as material ,effects of different sowing dates on the yield and grain quality were analyzed .The results showed that the yield of Liangyou 616'was declined gradually with low grain number per spike and seed setting rate postponing the sowing date .Among five different sowing dates ,the highest yield of Liangyou 616'was gained on 4th June ,and the lowest on 6th July .Liangyou 616'showed good grain quality and high scores of physicochemical properties indices under all sowing time treatments , the highest score appeared sowing on 6th July . Seven indices of Liangyou 616',including brown rice rate ,polished rice rate ,head milled rice rate ,translucent endosperm ,alkail value ,del consistency and amylose content ,all reached high quality standard under all treatments .It was also showed that milled rice rate and the scores of physicochemical properties of Liangyou 616'were increased ,and the chalkiness ratio was decreased with the delayed sowing date and the low average temperature of grain‐filling stage .Therefore by reasonably late sowing of Liangyou616'to control the temperature of rice grain‐filling stage ,the yield and grain quality could be both improved in large‐scale production of‘Liangyou 616’ .