Crops ›› 2016, Vol. 32 ›› Issue (3): 123-127.doi: 10.16035/j.issn.1001-7283.2016.03.023

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Mixed Sowing Technology between Alfalfa and Leymus chinensis in the Mountainous Area of Southern Ningxia

Cai Jinjun,Dang Wei,Dong Liguo,Zhang Yuanrun,Wang Yueling   

  1. Institute of Desertification Control,Ningxia Academy of Agricultural and Forestry Sciences,Yinchuan 750021,Ningxia,China
  • Received:2016-03-07 Revised:2016-04-20 Online:2016-06-15 Published:2018-08-26

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Abstract:

The purpose of this study is to explore the mixed sowing technology of alfalfa and Leymus chinensis in the mountainous areas of southern Ningxia.Combining with the growth conditions in the mountainous areas of southern Ningxia,in the two kinds fields of terrace and slope farmland, experiment on two species of grass mixed with different proportions were set up, and traits related to forage growth, above ground biomass and nutrient classification index were measured in groups.The results showed that plant height and stem leaf ratio of alfalfa and Leymus chinensis planting in terrace were higher than those of slope farmland; However,the biomass of slope land was higher than that of terraced field; Nutrition quality of alfalfa and Leymus chinensis showed that the feeding value of alfalfa was better when the alfalfa and Leymus chinensisin terraced field were sowed with a mixed ratio of 3:2; But the feeding value of Leymus chinensis was better when the alfalfa and Leymus chinensisin sloping farmland were sowed with a mixed ratio of 2:1; This study selected the most suitable mixed ratio for planting forage in mountainous area of southern Ningxia, and accumulated data for alfalfa and Leymus chinensis artificially mixed sowing in mountainous area of southern Ningxia.

Key words: Mixed sowing ratio, Growth condition, Biomass, Nutrient quality

Table 1

The effect of sowing rate on plant height cm"

地势Differentfield 牧草Forage grass 处理
Different sowing ratio		 测定日期Date
7月23日 8月1日 8月15日 9月9日 10月21日
梯田Terrace 紫花苜蓿Alfalfa CK1 9.1aA 19.1aA 28.5aA 35.3aA 39.5bB
T1 4.0bB 8.0bB 15.0bB 28.3bB 31.0cC
T2 3.7bB 8.5bB 12.7bcBC 28.7bB 30.6cC
T3 3.7bB 8.4bB 13.5bcBC 30.6bB 34.0cC
羊草Leymus chinensis CK2 5.2aA 7.3abAB 9.4aA 11.2cC 43.7aA
T1 5.0aA 8.5aA 9.5aA 11.0cdCD 43.1aA
T2 4.5cC 7.5abAB 10.2aA 11.4cC 44.6aA
T3 4.6abAB 8.0aA 9.5aA 10.5cdCD 42.5aA
坡耕地Slope farmland 紫花苜蓿Alfalfa CK1' 4.3bB 8.2bB 12.9bcBC 23.3bB 44.1aA
P1 4.0bB 5.5cC 15.8bB 21.0cC 28.8dD
P2 4.1bB 5.6cC 11.9cC 21.4cC 26.9deDE
P3 4.5bB 5.8cC 14.5bcBC 21.9cC 27.6deDE
羊草Leymus chinensis CK2' 4.9abAB 6.3cC 7.4bB 21.3aA 29.5bB
P1 5.3aA 6.8bcBC 7.6bB 17.9bB 25.3bcBC
P2 4.8bB 7.0bcBC 7.8bB 16.4bB 22.2cC
P3 4.0cC 6.8bcBC 7.7bB 14.5bB 24.5bcBC

Table 2

The effect of sowing rate on S/L"

紫花苜蓿
Alfalfa		 茎叶比（鲜重）
S/L(Fresh weight)		 羊草
Leymus chinensis		 茎叶比（鲜重）
S/L(Fresh weight)
CK1 0.65bB CK2 0.46bB
CK1' 0.57cC CK2' 0.40cC
T1 0.68bB T1 0.53aA
T2 0.86aA T2 0.53aA
T3 0.71bB T3 0.43bB
P1 0.49cC P1 0.38cC
P2 0.56cC P2 0.42bB
P3 0.52cC P3 0.41bB

Fig.1

Biomass of above ground of mixed Alfalfa"

Fig.2

Biomass of above ground of mixed Leymus chinensis"

Table 3

The content of nutrients in different mixed sowing ratio of Alfalfa g/kg"

指标Index CK1 CK1' T1 T2 T3 P1 P2 P3
粗蛋白Crude protein 2.25 1.70 2.08 2.14 2.09 1.83 1.90 1.92
粗脂肪Crude fat 0.15 0.14 0.12 0.13 0.13 0.15 0.16 0.13
中性洗涤纤维Neutral detergent fiber 3.94 4.18 3.49 3.55 3.85 3.74 3.81 3.65
酸性洗涤纤维Acid detergent fiber 2.86 3.42 3.23 3.25 3.34 3.01 2.71 2.96
粗灰分Ash 1.67 1.03 1.38 1.60 1.46 1.18 1.34 1.27

Table 4

The content of nutrients in different mixed sowing ratio of Leymus chinensis g/kg"

指标Iindex CK2 CK2' T1 T2 T3 P1 P2 P3
粗蛋白Crude protein 1.31 1.27 1.03 1.06 1.34 1.18 1.53 0.92
粗脂肪Crude fat 0.17 0.22 0.13 0.15 0.18 0.19 0.21 0.16
中性洗涤纤维Neutral detergent fiber 3.31 3.87 3.47 3.18 3.46 3.57 3.98 3.12
酸性洗涤纤维Acid detergent fiber 1.55 1.97 1.63 1.60 1.76 1.84 2.19 1.66
粗灰分Ash 0.81 0.91 0.70 0.78 0.86 0.88 1.07 0.73
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