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2 氮素穗肥施用期对产量（2年平均）及其构成因素的影响（2019年）

Table 2 Effects of application time of N fertilizer at spike differentiation stage on rice yield (average of two-year yield) and its components in 2019

处理 Treatment 有效穗数 Efficient panicle (×104/hm2) 千粒重 1000-grain weight (g) 穗粒数 Spikelets per panicle 结实率 Seed-setting rate (%) 产量 Yield (t/hm2) 库容量 Sink capacity (t/hm2) 抽穗前35d 35 days before heading 182.81c 23.15a 280.73d 93.19b 11.82c 11.87d 抽穗前28d 28 days before heading 215.62a 23.65a 283.84cd 94.98a 12.23bc 14.44b 抽穗前21d 21 days before heading 196.87abc 23.25a 318.32b 96.07a 12.68ab 14.55b 抽穗前14d 14 days before heading 210.94a 23.40a 350.73a 95.35a 12.90a 17.29a 抽穗前7d Seven days before heading 206.25ab 23.90a 291.59cd 95.99a 11.85c 14.37b 抽穗期Heading period 178.12c 23.95a 318.60b 95.71a 11.61c 13.59bc 抽穗后7d Seven days after heading 174.37c 23.05a 303.92bc 95.92a 11.58c 12.20cd 抽穗后14d 14 days after heading 187.50bc 23.40a 287.08cd 95.64a 11.69c 12.58cd