期刊论文

Effects of Nitrogen Management on Yield Formation and Rice Quality of Double Cropping Hybrid Rice in Southern Hunan

中文

作物杂志

1001-7283

2023

02

91-99

10.16035/j.issn.1001-7283.2023.02.013

国家重点研发计划“粮食丰产增效科技创新”重点专项（2017YFD0301501,2018YFD0301005）；

本校为第一机构

为明确湘南双季杂交稻适宜的氮肥运筹方式，以早稻品种陆两优996和株两优819、晚稻品种H优518和盛泰优018为材料，比较研究3种分蘖肥、穗肥、粒肥比例（7:2:1,N1;6:3:1,N2;5:4:1,N3）对双季杂交稻产量形成与稻米品质的影响。结果表明，氮肥运筹对双季稻产量及其构成因素有显著影响，早、晚稻实际产量均以N2处理最高，且显著高于N1处理，其增产的原因主要是有效穗数与穗粒数较高。与N1和N3处理相比，N2处理茎蘖数居中，但成穗率最高，且孕穗之后的叶面积指数、叶片叶绿素含量与干物质积累量最高。各品种糙米率、精米率和整精米率均以N2处理最高；N3处理直链淀粉含量显著低于N1处理，但与N2处理无...

To explore the optimal nitrogen management way for double cropping hybrid rice in southern Hunan,the effects of three kinds of proportion of base fertilizer,panicle fertilizer and grain fertilizer(7:2:1,N1;6:3:1,N2;5:4:1,N3)on yield formation and rice quality of double ...MORE To explore the optimal nitrogen management way for double cropping hybrid rice in southern Hunan,the effects of three kinds of proportion of base fertilizer,panicle fertilizer and grain fertilizer(7:2:1,N1;6:3:1,N2;5:4:1,N3)on yield formation and rice quality of double cropping rice early rice varieties,Luliangyou 996 an...