稻茬小麦氮高效品种产量构成和群体质量特征

丁永刚,李福建,王亚华,汤小庆,杜同庆,朱敏,李春燕,朱新开,丁锦峰,郭文善

Characteristics of yield components and population quality in high-nitrogen- utilization wheat cultivars

Yong-Gang DING,Fu-Jian LI,Ya-Hua WANG,Xiao-Qing TANG,Tong-Qing DU,Min ZHU,Chun-Yan LI,Xin-Kai ZHU,Jin-Feng DING,Wen-Shan GUO

表3 不同小麦品种间氮肥表观利用率与群体质量关键指标的相关性分析

Table 3 Correlation analysis between NUR and the parameters of population quality in different wheat cultivars

生长时期 Growth stage	指标 Parameter	2016-2017		2017-2018
生长时期 Growth stage	指标 Parameter	扬州 Yangzhou	睢宁 Suining	扬州 Yangzhou	睢宁 Suining
拔节期 EL	茎蘖数Stem and tiller number (×10⁴hm^-2)	0.781^*	0.605^*	0.166	0.223
孕穗期 BS	叶面积指数 LAI	0.765^*	0.803^*	0.350	0.353
	干物质积累量 DMA (kg hm^-2)	0.862^**	0.701^*	0.632^*	0.609^*
	茎蘖数 Stem and tiller number (×10⁴hm^-2)	0.779^*	0.625^*	0.799^*	0.637^*
开花期AS	叶面积指数 LAI	0.749^*	0.886^**	0.568^*	0.171
	干物质积累量 DMA (kg hm^-2)	0.903^**	0.717^*	0.697^*	0.801^*
	茎蘖数 Stem and tiller number (×10⁴hm^-2)	0.760^*	0.619^*	0.637^*	0.708^*
乳熟期 MR	叶面积指数 LAI	0.554^*	0.800^*	0.536^*	0.684^*
成熟期 MS	干物质积累量 DMA (kg hm^-2)	0.916^**	0.802^*	0.727^*	0.785^*
	茎秆+叶鞘干物质积累量DMA in stem and leaf sheath (kg hm^-2)	0.746^*	0.497^*	0.753^*	0.546^*
	叶片干物质积累量 DMA in leaf blade (kg hm^-2)	0.834^*	0.610^*	0.572^*	0.739^*
	颖壳+穗轴干物质积累量DMA in rachis and glumes (kg hm^-2)	0.842^*	0.610^*	0.303	0.575^*
花后干物质积累量Post-anthesis dry matter (kg hm^-2)		0.708^*	0.743^*	0.739^*	0.858^*
干物质转运量Dry matter remobilization (kg hm^-2)		0.223	0.475	0.529^*	0.317
收获指数 Harvest index		-0.145	0.222	0.156	-0.093