种植密度对贵州春玉米茎秆抗倒伏性能及籽粒产量的影响

郑迎霞, 陈杜, 魏鹏程, 卢平, 杨锦越, 罗上轲, 叶开梅, 宋碧

Effects of planting density on lodging resistance and grain yield of spring maize stalks in Guizhou province

ZHENG Ying-Xia, CHEN Du, WEI Peng-Cheng, LU Ping, YANG Jin-Yue, LUO Shang-Ke, YE Kai-Mei, SONG Bi

表6 种植密度对不同春玉米产量及其构成的影响

Table 6 Effects of planting density on yield and composition of different spring maize

品种 Varieties	密度 Density	2018				2019
品种 Varieties	密度 Density	有效穗数 Ear number	穗粒数 Kernels per ear	百粒重 100-kernel weight (g)	籽粒产量 Grain yield (kg hm^-2)	有效穗数 Ear number	穗粒数 Kernels per ear	百粒重 100-kernel weight (g)	籽粒产量 Grain yield (kg hm^-2)
先玉1171 Xianyu 1171	D1	45,959.6 d	767.4 a	36.8 a	9145.3 b	29,798.0 f	730.3 a	33.7 a	6345.4 d
	D2	50,505.1 d	754.4 a	36.4 a	10,232.1 b	43,602.7 e	716.0 a	31.4 ab	9561.8 c
	D3	61,279.5 d	749.1 a	33.8 b	11,811.2 a	55,892.3 d	685.6 ab	30.8 ab	10,350.4 b
	D4	72,727.3 b	653.8 b	32.6 bc	11,891.7 a	70,033.7 c	658.3 b	29.4 b	11,609.4 a
	D5	76,936 b	684.7 b	33.2 bc	13,051.3 a	79,292.9 b	637.9 b	29.4 b	11,858.6 a
	D6	87,878.8 a	677.0 b	31.2 c	11,957.9 a	93,939.4 a	633.2 b	29.0 b	12,358.7 a
新中玉801 Xinzhongyu 801	D1	43,266.0 c	828.3 a	41.3 a	8177.7 c	37,037.0 f	669.1 a	36.6 a	8219.4 c
	D2	48,989.9 c	794.8 a	39.0 a	9046.9 bc	46,127.9 e	646.6 a	36.4 a	9629.5 b
	D3	62,626.3 ab	633.3 b	39.9 a	11,357.4 a	57,070.7 d	627.1 a	36.3 a	10,744.7 a
	D4	61,784.5 b	577.3 b	36.1 b	10,283.6 ab	67,340.1 c	566.2 b	34.4 ab	10,744.6 a
	D5	66,330.0 ab	579.4 b	35.6 b	10,667.6 a	79,124.6 b	511.4 c	33.6 ab	11,305.1 a
	D6	71,548.8 a	611.2 b	34.1 b	11,055.9 a	91,077.4 a	436.0 d	32.6 b	10,664.1 a
变异来源 Source of variation	品种Varieties (V)		*		**	**		**
	密度Density (D)		**		**	**		**
	年份Year (Y)		ns		**	**		ns
	品种×密度 (V×D)		ns		*	ns		ns
	品种×年份 (V×Y)		**		*	ns		*
	密度×年份 (D×Y)		**		ns	ns		ns