氮素穗肥施用期对一季籼粳杂交稻氮肥效率、产量和品质的影响

乐丽红, 刘凯丽, 陈忠平, 王斌强, 唐舟, 程飞虎, 张昆

Effects of Application Time of N Fertilizer at Panicle Differentiation Stage on the Nitrogen Use Efficiencies, Yield and Quality of One-Season Indica-Japonica Hybrid Rice

Le Lihong, Liu Kaili, Chen Zhongping, Wang Binqiang, Tang Zhou, Cheng Feihu, Zhang Kun

表5 氮素穗肥施用期对籼粳杂交稻主要品质性状的影响（2019年）

Table 5 The effects of application time of N fertilizer indica-japonica hybrid rice grain quality at spike differentiation stage in 2019

处理 Treatment 出糙率 Brown rice rate (%) 精米率 Milled rice rate (%) 整精米率 Head rice rate (%) 粒长 Grain length (mm) 粒型长/宽比 Grain length and width ratio 垩白粒率 Chalkiness rate (%) 垩白度 Chalkiness (%) 直链淀粉 Amylose content (%) 胶稠度 Gel consistency (mm) 碱消 值 Setback 抽穗前35d 35 days before heading 82.30ab 74.40a 55.40d 5.40a 2.20a 36.50a 9.20a 13.10ab 86.00a 3.15b 抽穗前28d 28 days before heading 82.40ab 74.70a 68.70ab 5.40a 2.10a 28.00c 5.90d 13.80ab 77.50b 4.10a 抽穗前21d 21 days before heading 82.20ab 74.70a 67.30ab 5.40a 2.10a 34.00ab 7.60b 13.50a 77.00b 4.40a 抽穗前14d 14 days before heading 83.20a 74.70a 66.30bc 5.50a 2.20a 33.50b 7.10c 12.60b 82.50b 4.20a 抽穗前7d Seven days before heading 83.00a 74.40a 69.40ab 5.40a 2.10a 27.00c 5.50de 13.80a 72.50c 3.20b 抽穗期Heading period 81.60ab 74.30a 70.30a 5.50a 2.20a 20.50e 3.80f 13.30ab 73.50bc 3.05b 抽穗后7d Seven days after heading 81.80ab 73.50ab 67.30ab 5.40a 2.10a 23.50d 4.10f 12.40b 71.00cd 4.15a 抽穗后14d 14 days after heading 80.80b 72.30b 63.40c 5.50a 2.10a 24.00d 5.20e 13.50ab 67.50d 3.25b