不同日产量类型机插杂交籼稻的氮素吸收利用特性

邓飞,何连华,陈多,田青兰,李秋萍,曾玉玲,李博,陈虹,王丽,任万军

Characteristics of Nitrogen Absorption and Utilization of Machine- Transplanted Indica Hybrid Rice with Different Daily Yield Types

DENG Fei,HE LianHua,CHEN Duo,TIAN QingLan,LI QiuPing,ZENG YuLing,LI Bo,CHEN Hong,WANG Li,REN WanJun

表6 不同日产量类型机插杂交籼稻氮素利用特性

Table 6 N use efficiency of machine-transplanted indica hybrid rice with different daily yield types

年份 Year 日产量类型 Daily yield 氮素干物质生产效率 N use efficiency for biomass production (kg·kg-1) 氮素籽粒生产效率 N use efficiency for grain production (kg·kg-1) 氮素收获指数 N harvest index 氮素偏生产力 Partial factor productivity of applied N (kg·kg-1) 2017 高日产HDY 100.17b 49.50a 68.58a 69.12a 中日产MDY 102.39b 48.90a 64.27b 64.88b 低日产LDY 109.32a 50.63a 68.25a 59.89c 平均Mean 103.96A 49.68A 67.04A 64.63A 2018 高日产HDY 83.76d 40.45b 67.12a 66.15b 中日产MDY 85.24d 38.07b 62.85b 60.01c 低日产LDY 90.81c 38.11b 64.24b 53.743d 平均Mean 86.60B 38.88B 64.74B 59.97B F值 F value 年份Year (Y) 335.50** 201.80** 9.93** 56.87** 日产量类型 Daily yield (D) 23.43** 1.52 13.81** 93.37** 年份×日产量类型 Y×D 0.37 1.61 1.21 2.10