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2 种植密度对不同春玉米玉米茎秆节间长、粗的影响

Table 2 Effects of planting density on internode length and internode stem thickness of different spring maize

品种 Varieties	密度 Density	2018						2019
		节间长度 Internode length (cm)			节间粗 Internode stem thickness (mm)			节间长度 Internode length (cm)			节间粗 Internode stem thickness (mm)
		3	5	7	3	5	7	3	5	7	3	5	7
先玉1171 Xianyu 1171	D1	13.76 d	18.83 a	18.84 a	21.50 a	20.59 a	18.88 a	13.09 b	17.72 d	17.64 b	20.47 a	18.81 a	15.72 a
	D2	13.71 d	20.03 a	20.49 a	21.30 a	20.17 a	18.61 a	13.19 b	19.03 cd	19.63 a	20.49 a	18.97 a	15.30 a
	D3	14.34 cd	20.72 a	20.39 a	19.83 b	19.11 b	17.18 b	14.41 b	19.87 bc	19.29 a	18.89 b	17.06 b	13.96 b
	D4	15.18 bc	22.28 a	22.10 a	18.97 b	17.55 c	16.48 b	15.97 a	20.61 ab	19.83 a	17.34 c	16.00 c	13.22 bc
	D5	16.22 ab	21.70 a	21.65 a	17.71 c	16.74 cd	15.37 c	16.03 a	21.98 a	20.41 a	16.41 cd	15.08 c	12.39 cd
	D6	16.67 a	21.94 a	20.40 a	17.07 c	16.33 cd	15.28 c	17.25 a	22.05 a	19.27 a	15.37 d	13.81 d	11.29 d
平均值Mean		14.98	20.92	20.65	19.4	17.98	16.94	14.99	20.21	19.35	18.10	16.62	13.65
变异系数CV (%)		11.83	8.95	8.46	10.32	10.64	10.40	17.54	11.31	7.31	12.74	13.77	16.87
新中玉801 Xinzhongyu 801	D1	8.88 b	14.21 c	17.03 b	23.95 a	23.91 a	22.77 a	9.23 c	12.38 c	14.17 b	25.88 a	23.05 a	20.17 a
	D2	9.86 b	15.94 bc	17.65 b	22.52 b	22.09 b	21.11 b	9.81 c	12.72 bc	14.07 b	24.59 ab	22.1 ab	19.95 a
	D3	12.17 a	22.38 a	16.86 b	20.19 c	19.81 c	19.05 c	11.19 ab	14.63 a	15.52 a	23.47 b	20.89 b	19.28 a
	D4	12.89 a	17.33 bc	18.33ab	18.09 d	17.99 d	17.81 d	10.33 bc	14.09 ab	15.69 a	21.25 c	19.46 c	17.27 b
	D5	12.87 a	18.88 ab	19.48 a	17.22 e	16.72 e	16.17 e	11.99 a	15.78 a	16.44 a	20.37 c	18.44 d	16.13 b
	D6	12.10 a	18.60 ab	18.05 ab	16.62 e	16.45 e	14.96 f	12.49 a	15.60 a	16.81 a	18.66 d	16.77 e	14.71 c
平均值Mean		11.46	17.06	17.9	19.77	19.50	18.64	10.84	14.2	15.45	22.37	20.12	17.92
变异系数CV (%)		17.31	13.62	10.93	15.56	14.60	15.31	17.22	16.16	13.50	12.65	12.05	14.60
变异来源 Source of variation	品种Varieties (V)		^**		^**		^**	^**		^**		^**
	密度Density (D)		^**		^**		^**	^**		^**		^**
	年份Year (Y)		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	ns		ns		ns