种植密度对不同株型玉米冠层光能截获和产量的影响

柏延文,杨永红,朱亚利,李红杰,薛吉全,张仁和

Effect of planting density on light interception within canopy and grain yield of different plant types of maize

Yan-Wen BAI,Yong-Hong YANG,Ya-Li ZHU,Hong-Jie LI,Ji-Quan XUE,Ren-He ZHANG

表3 种植密度对不同株型玉米籽粒灌浆参数的影响

Table 3 Effect of plant density on grain-filling parameters of different types of maize

年份 Year	品种 Cultivar	密度 Density (×10⁴plant hm^-2)	Richards方程 Richards equation	R²	D_max (d)	W_max (g 100-kernel^-1)	G_max (g kernel^-1d^-1)	G_ave (g kernel^-1 d^-1)	P (d)
2016	陕单609	4.5	y=36.8/[1+exp(1.87-0.11x)]^3.3	0.9993	28.7±0.3 a	15.6±0.1 a	1.27±0.06 a	0.86±0.01 a	54.2±1.3 a
	Shaandan 609	6.0	y=35.4/[1+exp(2.58-0.11x)]^2.2	0.9995	28.4±0.3 b	15.4±0.2 b	1.17±0.02 b	0.79±0.02 b	52.6±0.9 b
		7.5	y=34.7/[1+exp(1.85-0.10x)]^3.1	0.9993	28.1±0.4 c	14.6±0.3 c	1.07±0.02 c	0.73±0.01 c	51.5±1.1 c
		9.0	y=33.2/[1+exp(1.51-0.09x)]^3.8	0.9989	27.9±0.4 d	13.7±0.3 d	0.98±0.01 d	0.66±0.00 d	50.1±0.7 d
	秦龙14	4.5	y=33.2/[1+exp(1.15-0.09x)]^4.4	0.9992	30.5±0.2 a	13.9±0.4 a	1.03±0.02 a	0.70±0.00 a	52.6±0.9 a
	Qinlong 14	6.0	y=32.3/[1+exp(1.73-0.09x)]^2.8	0.9988	30.2±0.3 b	13.7±0.1 b	0.93±0.02 b	0.65±0.01 b	51.5±1.2 b
		7.5	y=30.2/[1+exp(2.62-0.10x)]^1.8	0.9989	30.1±0.6 c	13.6±0.1 b	0.89±0.03 c	0.62±0.02 c	50.2±1.1 c
		9.0	y=29.5/[1+exp(2.36-0.09x)]^1.9	0.9976	29.7±0.3 c	13.2±0.2 c	0.79±0.04 d	0.58±0.03 d	49.5±0.8 d
	陕单8806	4.5	y=30.7/[1+exp(4.55-0.15x)]^0.8	0.9992	31.8±0.3 a	13.8±0.5 a	1.01±0.06 a	0.70±0.00 a	49.3±0.7 a
	Shaandan 8806	6.0	y=29.0/[1+exp(4.11-0.14x)]^0.9	0.9993	31.7±0.1 b	13.6±0.1 b	0.97±0.01 b	0.64±0.01 b	47.1±1.1 b
		7.5	y=28.6/[1+exp(3.71-0.13x)]^1.0	0.9997	31.4±0.6 c	13.4±0.4 c	0.90±0.04 c	0.60±0.01 c	46.7±0.6 c
		9.0	y=28.8/[1+exp(0.68-0.08x)]^1.5	0.9993	31.2±0.5 d	12.9±0.2 d	0.84±0.02 d	0.53±0.04 d	45.7±0.3 d
2017	陕单609	4.5	y=37.6/[1+exp(2.88-0.11x)]^7.8	0.9992	29.6±0.2 a	14.9±0.2 a	1.07±0.03 a	0.87±0.01 a	55.1±0.5 a
	Shaandan 609	6.0	y=34.8/[1+exp(0.66-0.08x)]^5.4	0.9991	29.4±0.2 b	13.9±0.3 b	0.95±0.01 b	0.83±0.01 b	53.7±0.8 b
		7.5	y=33.3/[1+exp(0.91-0.08x)]^4.4	0.9994	29.1±0.5 c	13.5±0.2 c	0.88±0.04 c	0.75±0.00 c	52.4±0.3 c
		9.0	y=32.2/[1+exp(0.59-0.08x)]^5.5	0.9995	28.9±0.4 d	12.8±0.4 d	0.84±0.03 d	0.69±0.00 d	51.9±1.2 d
	秦龙14	4.5	y=30.8/[1+exp(1.68-0.08x)]^1.1	0.9996	30.6±0.3 a	13.7±0.5 a	0.96±0.02 a	0.69±0.01 a	52.5±0.3 a
	Qinlong 14	6.0	y=28.8/[1+exp(1.77-0.08x)]^1.1	0.9994	30.2±0.7 b	13.2±0.3 b	0.92±0.06 b	0.67±0.02 a	52.1±0.2 b
		7.5	y=29.9/[1+exp(2.01-0.09x)]^2.3	0.9992	29.9±0.1 c	13.0±0.3 c	0.86±0.04 c	0.63±0.01 b	51.4±0.8 c
		9.0	y=26.9/[1+exp(3.39-0.12x)]^1.4	0.9994	29.6±0.2 d	12.7±0.3 d	0.82±0.02 d	0.58±0.03 c	46.0±1.1 d
	陕单8806	4.5	y=32.4/[1+exp(1.06-0.09x)]^4.3	0.9995	32.3±0.4 a	13.4±0.4 a	0.96±0.01 a	0.67±0.04 a	49.4±1.0 a
	Shaandan 8806	6.0	y=31.1/[1+exp(1.75-0.10x)]^2.8	0.9993	32.1±0.2 a	13.2±0.1 a	0.95±0.01 a	0.65±0.01 a	48.1±0.3 a
		7.5	y=29.8/[1+exp(1.30-0.09x)]^3.8	0.9994	31.8±0.3 b	12.3±0.3 b	0.91±0.00 b	0.61±0.01 b	46.6±0.5 b
		9.0	y=28.8/[1+exp(0.68-0.08x)]^5.6	0.9903	31.5±0.5 c	11.5±0.2 c	0.80±0.07 c	0.51±0.02 c	45.5±0.4 c