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5 不同日产量类型机插杂交籼稻氮素转运特性

Table 5 N redistribution characteristics of machine-transplanted indica hybrid rice with different daily yield types

年份 Year	日产量类型 Daily yield	氮素转运量 N redistribution amount (kg·hm^-2)		氮素转运率 N redistribution rate (%)		氮素转运贡献率 Contribution rate of redistributed N (%)
年份 Year	日产量类型 Daily yield	叶片 Leaf lamina	茎鞘 Stem plus sheath	叶片 Leaf lamina	茎鞘 Stem plus sheath	叶片 Leaf lamina	茎鞘 Stem plus sheath
2017	高日产HDY	83.93a	30.00a	73.43a	37.36a	48.49a	17.29a
	中日产MDY	70.93b	16.53bc	68.47b	22.71b	46.26ab	10.99b
	低日产LDY	64.27b	22.96ab	68.56b	37.67a	44.51ab	15.97a
	平均Mean	73.04B	23.16A	70.15A	32.58A	46.42A	14.75A
2018	高日产HDY	80.16a	18.31bc	66.20b	23.49b	40.84b	9.39b
	中日产MDY	83.01a	8.39d	66.90b	10.27c	46.58ab	4.82c
	低日产LDY	79.39a	12.82cd	67.74b	19.07bc	49.61a	7.44bc
	平均Mean	80.85A	13.17B	66.95B	17.61B	45.68A	7.21B
F值 F value	年份Year (Y)	9.46**	19.53**	10.40**	25.66**	0.20	32.40**
	日产量类型 Daily yield (D)	4.97**	10.39**	1.89	9.92**	0.71	6.89**
	年份×日产量类型 Y×D	5.43**	0.24	4.28*	0.36	4.66*	0.30