密度和株行距配置对川中丘区夏玉米群体光分布及雌雄穗分化的影响

金容,李钟,杨云,周芳,杜伦静,李小龙,孔凡磊,袁继超

Effects of density and row spacing on population light distribution and male and female spike differentiation of summer maize in hilly area of central Sichuan

Rong JIN,Zhong LI,Yun YANG,Fang ZHOU,Lun-Jing DU,Xiao-Long LI,Fan-Lei KONG,Ji-Chao YUAN

表3 密度和株行距配置对玉米雄穗特性的影响

Table 3 Effects of density and row spacing on tassel characteristics of maize

年份 Year	密度 Density	株行距配置 Row spacing	主轴长度 Spindle length (cm)	分枝数 Branch number	成对小穗数 Spikelet number
2017	A1	B1	46.55 a	8.50 a	364.13 a
		B2	46.25 a	8.25 a	348.00 ab
		B3	45.90 a	8.75 a	344.00 b
		B4	45.45 ab	8.25 a	342.50 b
		B5	44.63 b	8.50 a	336.25 b
		平均值Average	45.76 A	8.45 A	346.98 A
	A2	B1	44.75 a	8.50 a	352.50 a
		B2	43.45 ab	8.00 a	350.75 a
		B3	43.18 b	8.50 a	341.75 a
		B4	42.00 b	8.25 a	337.50 a
		B5	42.00 b	8.00 a	335.00 a
		平均值Average	43.08 A	8.25 A	343.50 A
	F值	密度 Density (D)	18.55^*	3.00	2.71
	F-value	行距Row spacing (R)	5.16^**	0.38	3.02^*
		密度×行距D×R	0.52	0.10	0.27
2018	A1	B1	59.00 a	9.40 a	355.00 a
		B2	58.60 a	8.80 a	326.40 ab
		B3	57.30 ab	9.80 a	343.60 a
		B4	56.00 b	9.40 a	319.40 b
		平均值Average	57.73 A	9.35 A	336.10 A
	A2	B1	56.70 ab	9.20 a	315.20 a
		B2	58.50 a	8.80 a	314.60 a
		B3	55.30 bc	9.20 a	312.60 a
		B4	54.50 c	9.20 a	301.20 a
		平均值Average	56.25 B	9.10 A	310.90 B
	A3	B1	55.90 a	8.80 a	282.80 a
		B2	55.50 a	8.60 a	270.80 a
		B3	52.80 b	9.00 a	289.00 a
		B4	55.80 a	9.20 a	289.00 a
		平均值Average	55.00 B	8.90 A	282.90 C
	F值	密度 Density (D)	21.09^**	0.34	29.29^**
	F-value	行距Row spacing (R)	8.08^**	0.82	0.87
		密度×行距 D×R	2.42^*	0.11	0.55