Effects of mixed sowing of Medicago sativa and Agropyron cristatum on forage quality

doi:10.6048/j.issn.1001-4330.2025.02.025

Abstract

Abstract:

【Objective】To screen the optimal mixed seeding ratio of Medicago sativa and Agropyron cristatum in the hope of providing a theoretical basis for the establishment of high quality artificial grassland in northern Xinjiang.【Methods】The effects of mixed sowing of legume and grass on forage quality were analyzed by means of forage nutrient index detection technique and mathematical statistics method. The ratios of legume-grass mixtures of the seven treatments were A (3∶7), B (4∶6), C (5∶5), D (6∶4), E (7∶3), M. sativa and A. cristatum. 【Results】There were significant differences in forage nutrition quality and proportion of mixed sowing in mixed sowing year, and the crude fat content of mixed sowing treatment was significantly increased compared with that of single sowing of alfalfa (P<0.05). Under C (5∶5) treatment, the contents of neutral and acid detergent fibers were lower (38.64% and 27.51%, respectively), crude protein content was 19.01%, total carbon, total nitrogen content and soluble sugar content were higher (40.21%, 3.04% and 41.77%, respectively). The results of the comprehensive evaluation of grey correlation degree for different treatments were BC > C (5∶5) > A (3∶7) > D (6∶4) > E (7∶3) > B (4∶6) > MX.【Conclusion】 M. sativa and A. cristatum can improve the nutritional quality of herbage, and the nutritional quality of mixed sowing herbage is better than that of MX, and the best mixed sowing ratio of 5∶5 is used in the mixed sowing treatments.

Key words: Medicago sativa; Agropyron cristatum; mixed cropping; mixed sowing ratio; forage quality; the year of planting; artificial grassland

摘要：

【目的】筛选紫花苜蓿(Medicago sativa)和冰草(Agropyron cristatum)最佳混播比例,为获得高品质牧草提供混播组合和理论依据。【方法】分别设置7个处理,分别为豆(豆科牧草)∶禾(禾本科牧草)为A(3∶7)、B(4∶6)、C(5∶5)、D(6∶4)、E(7∶3)、单播紫花苜蓿(MX)和单播冰草(BC),利用牧草养分指标检测技术和数理统计方法,分析不同比例豆禾混播对牧草品质的影响。【结果】混播当年牧草品质与混播比例差异显著,各混播处理与紫花苜蓿单播相比粗脂肪含量均有显著提升(P<0.05);C处理下中性洗涤纤维和酸性洗涤纤维含量较低,分别为38.64%、27.51%;粗蛋白含量为19.01%;全碳、全氮、可溶性糖含量较高,分别为40.21%、3.04%和41.77%。不同处理采用灰色关联度综合评价排序结果为BC>C>A>D>E>B>MX。【结论】紫花苜蓿和冰草混播可改善牧草的品质,混播牧草品质优于紫花苜蓿单播,且在混播各处理中以豆禾5∶5为最佳混播比例。

关键词: 紫花苜蓿, 冰草, 同行混播, 混播比例, 牧草品质, 播种当年, 人工草地

CLC Number:

S5517

XU Yingyue, HOU Yurong, ZHOU Chenye, WANG Jing, LI Youzheng, ZHOU Qi, LAN Jiyong, KE Mei, WEI Peng, WANG yuxiang. Effects of mixed sowing of Medicago sativa and Agropyron cristatum on forage quality[J]. Xinjiang Agricultural Sciences, 2025, 62(2): 474-483.

许莹月, 侯钰荣, 周晨烨, 王静, 李有政, 周齐, 兰吉勇, 柯梅, 魏鹏, 王玉祥. 紫花苜蓿与冰草混播当年对牧草品质的影响[J]. 新疆农业科学, 2025, 62(2): 474-483.

Figures/Tables 11

References 36

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土层 Soil layer (cm)	全氮 Total nitrogen (g/kg)	全磷 Total phosphorus (g/kg)	全钾 Total potassium (g/kg)	速效氮 Available nitrogen (mg/kg)	速效磷 Available phosphorus (mg/kg)	速效钾 Available potassium (mg/kg)	土壤容重 Soil bulk density (g/cm³)	有机质 Organic matter (g/kg)
0~10	1.55	1.01	14.09	35.65	37.92	188.44	1.55	8.35
10~20	0.87	1.04	13.92	47.20	36.99	126.08	1.61	9.48
20~30	1.02	1.09	14.90	27.56	15.34	120.74	1.63	8.49
30~40	0.78	0.91	14.29	33.72	14.92	123.75	1.65	5.39

土层 Soil layer (cm)	全氮 Total nitrogen (g/kg)	全磷 Total phosphorus (g/kg)	全钾 Total potassium (g/kg)	速效氮 Available nitrogen (mg/kg)	速效磷 Available phosphorus (mg/kg)	速效钾 Available potassium (mg/kg)	土壤容重 Soil bulk density (g/cm³)	有机质 Organic matter (g/kg)
0~10	1.55	1.01	14.09	35.65	37.92	188.44	1.55	8.35
10~20	0.87	1.04	13.92	47.20	36.99	126.08	1.61	9.48
20~30	1.02	1.09	14.90	27.56	15.34	120.74	1.63	8.49
30~40	0.78	0.91	14.29	33.72	14.92	123.75	1.65	5.39

处理 Treatments	播种量Sowing quantity( kg/hm²)
处理 Treatments	紫花苜蓿 Medicago sativa var.Jianeng	冰草 Agropyron cristatum
MX	18.00	0.00
BC	0.00	45.00
A(3∶7)	5.40	31.50
B(4∶6)	7.20	27.00
C(5∶5)	9.00	22.50
D(6∶4)	10.80	18.00
E(7∶3)	12.60	13.50

处理 Treatments	播种量Sowing quantity( kg/hm²)
处理 Treatments	紫花苜蓿 Medicago sativa var.Jianeng	冰草 Agropyron cristatum
MX	18.00	0.00
BC	0.00	45.00
A(3∶7)	5.40	31.50
B(4∶6)	7.20	27.00
C(5∶5)	9.00	22.50
D(6∶4)	10.80	18.00
E(7∶3)	12.60	13.50

指标 Indexes	权重系数 Weight coefficient	排序 Ranking
中性洗涤纤维Neutral detergent fibre	0.078 8	8
酸性洗涤纤维Acid detergent fibre	0.092 2	2
粗脂肪Crude fat	0.089 0	4
全碳Total carbon	0.076 8	11
全氮Total nitrogen	0.089 9	3
全磷Total phosphorus	0.078 5	9
淀粉Starch	0.099 1	1
可溶性糖Soluble sugar	0.077 2	10
半纤维素Hemicellulose	0.082 3	6
纤维素Cellulose	0.080 0	7
粗蛋白Crude protein	0.071 9	12
木质素Lignin	0.084 3	5