一年生和多年生豆禾混播草地超产与多样性效应的比较

黎松松, 王宁欣, 郑伟, 朱亚琼, 王祥, 马军, 朱进忠

Comparison of transgressive overyielding effect and plant diversity effects of annual and perennial legume-grass mixtures

LI Song-Song, WANG Ning-Xin, ZHENG Wei, ZHU Ya-Qiong, WANG Xiang, MA Jun, ZHU Jin-Zhong

表2 不同混播种类下牧草产量、超产和豆科牧草产量比的比较(平均值±标准误)

Table 2 Comparison of forage yield, overyielding and legume yield proportion under different mixed patterns (mean ± SE)

年份 Year	处理编号 Treatment number	产量 Yield (kg·m^-2)		超产 Overyielding (kg·m^-2)			超产效应1 Transgressive overyielding effect 1 (OV₁)	超产效应2 Transgressive overyielding effect 2 (OV₂)	豆科产量比 Legume proportion (%)
年份 Year	处理编号 Treatment number	混播处理 Mixed treatment	单播对照 Monoculture control	与单播相比 Difference by monoculture control	与PM2相比 Difference by PM2	与PM4相比 Difference by PM4	超产效应1 Transgressive overyielding effect 1 (OV₁)	超产效应2 Transgressive overyielding effect 2 (OV₂)	豆科产量比 Legume proportion (%)
2013	AM2	1.26 ± 0.11 ^a	1.22 ± 0.37	0.04			0.07 ± 0.14 ^b	0.08 ± 0.05 ^b	12.33 ± 1.52 ^c
	PM2-A	0.70 ± 0.06 ^b	0.39 ± 0.12	0.28			0.77 ± 0.13 ^a	0.92 ± 0.24 ^a	21.67 ± 5.40 ^b
	PM2-B	0.68 ± 0.12 ^b	0.40 ± 0.15	0.28			0.15 ± 0.09 ^b	0.62 ± 0.21 ^ab	27.03 ± 17.02 ^b
	PM2-C	0.28 ± 0.07 ^c	0.22 ± 0.06	0.06			-0.09 ± 0.04 ^c	-0.31 ± 0.17 ^c	34.00 ± 5.53 ^b
	PM2-D	0.28 ± 0.05 ^c	0.24 ± 0.13	0.04			-0.13 ± 0.11 ^c	0.08 ± 0.03 ^b	81.67 ± 3.47 ^a
	PM4	0.73 ± 0.07 ^b	0.31 ± 0.06	0.42	0.42		0.86 ± 0.15 ^a	1.54 ± 0.35 ^a	29.33 ± 3.79 ^b
	PM6	0.63 ± 0.10 ^b	0.28 ± 0.10	0.35	0.32	0.32	0.62 ± 0.15 ^a	1.30 ± 0.24 ^a	32.33 ± 18.13 ^b
2014	AM2	0.75 ± 0.05 ^a	0.79 ± 0.33	-0.04			-0.15 ± 0.06 ^c	-0.06 ± 0.06 ^cd	32.33 ± 1.53 ^b
	PM2-A	0.33 ± 0.01 ^bc	0.14 ± 0.02	0.19			0.55 ± 0.17 ^b	0.19 ± 0.06 ^b	10.00 ± 9.64 ^d
	PM2-B	0.26 ± 0.04 ^cd	0.09 ± 0.03	0.17			0.23 ± 0.13 ^b	0.07 ± 0.03 ^cd	21.33 ± 11.59 ^c
	PM2-C	0.19 ± 0.01 ^d	0.16 ± 0.11	0.03			-0.02 ± 0.01 ^c	-0.15 ± 0.10 ^d	15.67 ± 5.13 ^cd
	PM2-D	0.15 ± 0.03 ^d	0.10 ± 0.07	0.05			0.30 ± 0.12 ^b	0.10 ± 0.02 ^b	52.33 ± 15.57 ^a
	PM4	0.41 ± 0.03 ^b	0.13 ± 0.06	0.28	0.18		1.01 ± 0.17 ^a	0.36 ± 0.03 ^a	13.67 ± 6.43 ^cd
	PM6	0.35 ± 0.04 ^bc	0.32 ± 0.21	0.03	0.12	0.22	-0.76 ± 0.02 ^d	-0.07 ± 0.04 ^cd	12.00 ± 6.56 ^cd
2015	AM2	0.36 ± 0.03 ^a	0.21 ± 0.10	0.16			0.17 ± 0.14 ^a	0.80 ± 0.17 ^a	29.33 ± 8.33 ^c
	PM2-A	0.25 ± 0.04 ^c	0.27 ± 0.07	-0.02			0.01 ± 0.09 ^ab	0.64 ± 0.18 ^ab	4.33 ± 1.15 ^d
	PM2-B	0.29 ± 0.02 ^b	0.39 ± 0.16	-0.10			-0.04 ± 0.06 ^b	0.25 ± 0.11 ^b	10.67 ± 0.58 ^d
	PM2-C	0.33 ± 0.03 ^ab	0.37 ± 0.15	-0.04			-0.30 ± 0.12 ^d	-0.08 ± 0.04 ^c	8.33 ± 2.31 ^d
	PM2-D	0.36 ± 0.01 ^a	0.31 ± 0.13	0.05			-0.06 ± 0.13 ^b	-0.18 ± 0.11 ^c	80.67 ± 4.04 ^a
	PM4	0.25 ± 0.03 ^b	0.87 ± 0.29	-0.62	-0.08		-0.31 ± 0.06 ^d	-0.07 ± 0.06 ^c	42.26 ± 4.62 ^b
	PM6	0.31 ± 0.01 ^b	0.27 ± 0.14	0.04	-0.02	-0.56	-0.21 ± 0.06 ^bc	0.29 ± 0.06 ^bc	21.67 ± 2.31 ^c
3年平均值 Three years average	AM2	0.80 ± 0.25 ^a	0.74 ± 0.34	0.06			0.03 ± 0.07 ^b	0.27 ± 0.10 ^a	21.33 ± 2.08 ^b
	PM2-A	0.46 ± 0.10 ^b	0.27 ± 0.08	0.19			0.44 ± 0.10 ^a	0.58 ± 0.12 ^a	21.00 ± 10.44 ^b
	PM2-B	0.43 ± 0.07 ^b	0.29 ± 0.17	0.14			0.10 ± 0.23 ^ab	0.15 ± 0.20 ^ab	23.33 ± 10.41 ^b
	PM2-C	0.26 ± 0.03 ^c	0.25 ± 0.12	0.01			0.04 ± 0.10 ^b	-0.20 ± 0.10 ^b	19.33 ± 1.53 ^b
	PM2-D	0.23 ± 0.05 ^c	0.22 ± 0.09	0.01			-0.01 ± 0.08 ^b	-0.21 ± 0.24 ^b	74.67 ± 4.04 ^a
	PM4	0.48 ± 0.01 ^b	0.44 ± 0.12	0.04	0.22		0.52 ± 0.14 ^a	0.61 ± 0.18 ^a	29.67 ± 2.89 ^b
	PM6	0.46 ± 0.04 ^b	0.29 ± 0.13	0.17	0.12	0.02	-0.09 ± 0.12 ^b	0.51 ± 0.14 ^a	28.00 ± 11.53 ^b