扩行缩株对夏玉米群体冠层结构及产量的影响

丁相鹏,白晶,张春雨,张吉旺,刘鹏,任佰朝,赵斌

Effects of Line-Spacing Expansion and Row-Spacing Shrinkage on Population Structure and Yield of Summer Maize

DING XiangPeng,BAI Jing,ZHANG ChunYu,ZHANG JiWang,LIU Peng,REN BaiZhao,ZHAO Bin

表3 扩行缩株对夏玉米群体光合势的影响

Table 3 Effects of line-spacing expansion and row-spacing shrinkage on LAD of summer maize population

年份 Year	密度 Density	行距 Row space	吐丝前光合势 LAD in pre-anthesis (m²·d·m^-2)			吐丝后光合势 LAD in post-anthesis (m²·d·m^-2)			总LAD Total LAD (m²·d·m^-2)
年份 Year	密度 Density	行距 Row space	VE-V12	V12-R1	Total	R1-R3	R3-R6	Total	总LAD Total LAD (m²·d·m^-2)
2018	D1	B1	65.76b	93.38c	159.14b	148.37cd	118.62c	267.00c	426.14c
		B2	67.63b	95.51c	163.15b	151.39c	118.37c	269.75c	432.90c
		B3	67.09b	92.50c	159.59b	145.64d	117.31c	262.95c	422.54c
		平均值Average	66.83	93.80	160.63	148.47	118.10	266.57	427.20
	D2	B1	80.75a	113.06ab	193.81a	175.40ab	131.51b	306.91b	500.73b
		B2	81.64a	114.54a	196.18a	180.30a	140.68a	320.98a	517.16a
		B3	80.61a	110.50b	191.11a	172.45b	134.11b	306.57b	497.68b
		平均值Average	81.00	112.70	193.70	176.05	135.44	311.49	505.19
2019	D1	B1	83.33c	104.09b	187.42b	141.36c	118.04d	259.40c	446.82c
		B2	83.18c	105.02b	188.21b	143.05c	117.43d	260.07c	448.28c
		B3	81.75c	102.77b	184.52b	139.79c	117.06d	256.85c	441.36c
		平均值Average	82.75	103.96	186.72	141.40	117.04	258.44	445.16
	D2	B1	93.80b	117.69a	211.50a	164.48b	127.13c	291.61b	503.11b
		B2	95.64ab	120.44a	216.08a	172.78a	137.22a	309.99a	526.07a
		B3	97.06a	119.06a	216.12a	166.70b	131.63b	298.33b	514.45ab
		平均值Average	95.50	119.06	214.57	167.99	131.99	299.98	514.54
	变异来源 Sources of variation	年份 Year (Y)	**	**	**	**	**	**	**
		密度 Density (D)	**	**	**	**	**	**	**
		行距 Race space (R)	NS	**	NS	**	**	**	**
		年份×密度Y×D	NS	**	**	NS	NS	NS	NS
		年份×行距Y×R	NS	NS	NS	NS	NS	NS	NS
		密度×行距D×R	NS	NS	NS	NS	**	**	NS
		年份×密度×行距 Y×D×R	*	NS	NS	NS	NS	NS	NS