新疆农业科学 ›› 2024, Vol. 61 ›› Issue (7): 1793-1804.DOI: 10.6048/j.issn.1001-4330.2024.07.028
• 草业·农业装备工程与机械化·畜牧兽医 • 上一篇 下一篇
马勇1(), 刘慧1,2(
), 高红梅1, 康雪1, 马春晖1
收稿日期:
2023-12-05
出版日期:
2024-07-20
发布日期:
2024-09-04
通信作者:
刘慧(1987-),女,新疆石河子人,讲师,硕士,研究方向为牧草资源开发与利用及牧草有害生物绿色防治,(E-mail)liuhui201191@126.com作者简介:
马勇(1998-),男,新疆伊宁人,硕士研究生,研究方向为饲草加工与生产,(E-mail)1435995281@qq.com
基金资助:
MA Yong1(), LIU Hui1,2(
), GAO Hhongmei1, KANG Xue1, MA Chunhui1
Received:
2023-12-05
Published:
2024-07-20
Online:
2024-09-04
Supported by:
摘要:
【目的】研究不同氮素水平下紫花苜蓿与多年生黑麦草混播对其产量和营养品质的影响,筛选出最佳氮素水平下的混播比例。【方法】以紫花苜蓿(WL525HQ)和多年生黑麦草(托亚)为材料,采用两因素裂区设计,以施氮量为主区,N0:不施氮;N1:总施氮量20%为基肥、分枝期追肥20%、现蕾期追肥60%;N2:总施氮量20%为基肥、分枝期追肥30%、现蕾期追肥50%;混播比例为副区单播紫花苜蓿(M)、多年生黑麦草(L),播种量分别为22.5、60.0 kg/hm2;紫花苜蓿+多年生黑麦草7∶3(M7+L3)、紫花苜蓿+多年生黑麦草6∶4(M6+L4)、紫花苜蓿+多年生黑麦草5∶5(M5+L5)、紫花苜蓿+多年生黑麦草4∶6(M4+L6)、紫花苜蓿+多年生黑麦草3∶7(M3+L7);共计21个处理,每个小区播种量按照单播处理的百分比分别播种,3个重复。比较分析各处理的产量和营养品质。【结果】在氮素水平N0、N1、N2处理下,不同茬次紫花苜蓿与多年生黑麦草混播干草产量均显著高于单播(P<0.05),M5+L5处理干草产量达到1.06 t/hm2。在氮素水平N0、N1、N2处理下,粗蛋白CP、干物质DM、饲料相对值RFV、总可滴化养分TDN和单位面积CP产量含量均显著高于单播(P<0.05),中性洗涤纤维NDF、酸性洗涤纤维ADF均显著低于单播(P<0.05);N1氮素水平下,除M7+L3处理CP含量显著最高(P<0.05),且随多年生黑麦草的比例增加呈先增高后降低的趋势,M5+L5处理CP含量最高,M6+L4处理DM含量显著最高(P<0.05),M5+L5处理RFV、TDN最高(P<0.05)。而M5+L5处理NDF、ADF含量显著最低(P<0.05),且随多年生黑麦草的比例增加呈先降低后增高的趋势。【结论】不同氮素水平紫花苜蓿与多年生黑麦草混播产量、CP、DM、RFV、TDN、单位面积粗蛋白CP含量均高于单播,NDF、ADF含量低于单播,并在紫花苜蓿与多年生黑麦草混播比例5∶5最优,年干草产量达到1.06 t/hm2,粗蛋白含量为26.05%,NDF、ADF分别为26.03%、26.03%;氮素处理的牧草产量和营养品质要高于对照组,且混播中多年生黑麦草的氮素利用率随着其比例的增高而增高,其中以总施氮量(100 kg/hm2)的20%为基肥、分枝期追肥20%,现蕾期追肥60%最优。
中图分类号:
马勇, 刘慧, 高红梅, 康雪, 马春晖. 不同氮素水平下紫花苜蓿与多年生黑麦草混播对其产量和营养品质的影响[J]. 新疆农业科学, 2024, 61(7): 1793-1804.
MA Yong, LIU Hui, GAO Hhongmei, KANG Xue, MA Chunhui. Effects of mixed seeding of alfalfa and perennial ryegrass on yield and nutritional quality under different nitrogen levels[J]. Xinjiang Agricultural Sciences, 2024, 61(7): 1793-1804.
处理 Treatments | 播种方式 Sowing method | 氮素水平 Nitrogen level | 基肥 Basal fertilizer (kg/hm2) | 追肥 Nitrogen topdressing (kg /hm2) | 总施氮量 Total nitrogen application (kg /hm2) | 比例 Rate | 播种量 Seeding rate (kg/hm2) | ||
---|---|---|---|---|---|---|---|---|---|
分枝期 Branching | 现蕾期 Squaring | 豆科 Legumes | 禾本科 Grasses | ||||||
M | 紫花苜蓿 | N0 | 0 | 0 | 0 | 0 | - | 22.5 | - |
N1 | 20 | 20 | 0 | 40 | |||||
N2 | 20 | 30 | 0 | 50 | |||||
L | 多年生黑麦草 | N0 | 0 | 0 | 0 | 0 | - | - | 60 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M7+L3 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 7∶3 | 15.75 | 18 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M6+L4 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 6∶4 | 13.5 | 24 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M5+L5 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 5∶5 | 11.25 | 50 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M4+L6 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 4∶6 | 9 | 36 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M3+L7 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 3∶7 | 6.75 | 42 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 |
表1 试验小区的各处理播种量及施氮量
Tab.1 The amount of sowing and nitrogen application in the experimental plot
处理 Treatments | 播种方式 Sowing method | 氮素水平 Nitrogen level | 基肥 Basal fertilizer (kg/hm2) | 追肥 Nitrogen topdressing (kg /hm2) | 总施氮量 Total nitrogen application (kg /hm2) | 比例 Rate | 播种量 Seeding rate (kg/hm2) | ||
---|---|---|---|---|---|---|---|---|---|
分枝期 Branching | 现蕾期 Squaring | 豆科 Legumes | 禾本科 Grasses | ||||||
M | 紫花苜蓿 | N0 | 0 | 0 | 0 | 0 | - | 22.5 | - |
N1 | 20 | 20 | 0 | 40 | |||||
N2 | 20 | 30 | 0 | 50 | |||||
L | 多年生黑麦草 | N0 | 0 | 0 | 0 | 0 | - | - | 60 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M7+L3 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 7∶3 | 15.75 | 18 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M6+L4 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 6∶4 | 13.5 | 24 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M5+L5 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 5∶5 | 11.25 | 50 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M4+L6 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 4∶6 | 9 | 36 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 | |||||
M3+L7 | 紫花苜蓿+多年黑麦草 | N0 | 0 | 0 | 0 | 0 | 3∶7 | 6.75 | 42 |
N1 | 20 | 20 | 60 | 100 | |||||
N2 | 20 | 30 | 50 | 100 |
处理 Treatments | 粗蛋白 CP(%) | 干物质 DM(%) | 中性 洗涤纤维 NDF(%) | 酸性 洗涤纤维 ADF(%) | 饲料 相对价值 RFV | 总可 消化养分 TND | 单位面积 CP产量 (unit area)CP (%) | |
---|---|---|---|---|---|---|---|---|
N0 | M | 20.27±0.01Cc | 23.35±0.01Bc | 35.31±0.01Ab | 22.79±0.01Aab | 144.54±7.0Ab | 71.12±0.37Bc | 68.97±4.72Bb |
L | 17.65±0.02Bd | 28.90±0.02Ba | 47.31±0.01Aa | 25.48±0.01Aa | 132.59±4.41Ac | 71.19±0.94Bc | 25.80±4.61Cc | |
M7+L3 | 24.21±0.12Ba | 27.59±0.01Bb | 31.92±0.02Ac | 20.27±0.12Ac | 151.13±5.31Aa | 74.49±1.50Bb | 115.71±9.25Ba | |
M6+L4 | 22.32±0.01Bb | 24.98±0.01Bbc | 33.78±0.01Ab | 23.71±0.02Aab | 150.57±5.98Aa | 71.16±1.14Bc | 82.01±2.23Cb | |
M5+L5 | 23.32±0.01Bab | 25.17±0.01Bbc | 28.09±0.01Bd | 17.95±0.01Bd | 154.40±6.00Aa | 75.95±0.75Bb | 81.53±8.09Bb | |
M4+L6 | 23.65±0.01Aab | 26.43±0.03Babc | 24.51±0.07Ce | 15.38±0.03Ce | 153.08±4.2Aa | 78.05±0.54Aa | 74.81±14.25Bb | |
M3+L7 | 22.33±0.02Ab | 23.79±0.01Bce | 27.45±0.01Cd | 15.47±0.01Ce | 153.65±3.91Aa | 78.22±0.95Aa | 87.52±7.31Bb | |
N1 | M | 25.05±0.01Ab | 27.63±0.01Ac | 30.47±0.03Bb | 19.43±0.02Ba | 145.24±9.73Ab | 75.43±0.76Ab | 119.52±1.49Ab |
L | 17.43±0.03Ad | 33.76±0.01Aa | 48.98±0.02Ba | 19.62±0.05Ba | 130.76±0.30Ab | 72.54±1.40Ac | 48.73±4.78Ac | |
M7+L3 | 26.39±0.05Aa | 27.39±0.03Bc | 30.61±0.02Bb | 18.96±0.02Bab | 151.02±3.11Aa | 75.94±0.91Ab | 164.49±7.12Aa | |
M6+L4 | 24.86±0.02Ac | 30.02±0.02Aa | 30.43±0.01Bb | 20.02±0.03Ba | 150.82±1.31Aa | 74.91±0.48Ab | 175.01±5.47Aa | |
M5+L5 | 26.05±0.01Aa | 25.31±0.02Bc | 26.03±0.03Cc | 15.34±0.04Cb | 154.00±1.78Aa | 78.07±0.70Aa | 168.03±12.21Aa | |
M4+L6 | 22.44±0.03Ac | 19.29±0.03Cd | 29.33±0.02Bb | 18.08±0.02Bb | 152.90±7.36Aa | 74.99±0.66Bb | 112.92±9.31Ab | |
M3+L7 | 22.74±0.01Bc | 27.05±0.02Ac | 31.07±0.02Bb | 20.28±0.02Ba | 150.61±4.00Aa | 74.10±0.30Bbc | 116.01±8.62Ab | |
N2 | M | 23.06±0.01Bc | 27.86±0.01Abc | 27.65±0.02Bd | 18.64±0.01Bbc | 142.56±3.24Ab | 75.33±0.25Aab | 82.07±9.12Be |
L | 19.00±0.02Bf | 34.23±0.04Aa | 40.64±0.03Ba | 18.04±0.02Bbc | 136.49±3.29Ac | 74.32±0.19Ab | 48.19±8.06Bf | |
M7+L3 | 25.43±0.01Ba | 29.59±0.01Abc | 30.14±0.01Bc | 16.50±0.05Bc | 148.72±4.25Aab | 74.55±047Bb | 183.65±7.01Aa | |
M6+L4 | 22.00±0.03Bd | 28.95±0.02Abc | 29.33±0.01Bc | 19.19±0.01Babc | 150.18±3.91Aa | 74.52±1.04Ab | 121.01±4.43Bc | |
M5+L5 | 23.87±0.01Ab | 28.75±0.01Abc | 30.24±0.01Ac | 20.02±0.01Aabc | 148.12±3.14Aab | 77.83±4.38ABa | 141.85±9.98ABb | |
M4+L6 | 20.24±0.05Be | 31.69±0.01Aab | 35.10±0.01Ab | 23.55±0.03Aa | 152.02±4.77Aa | 70.53±0.90Cc | 106.19±9.99Ad | |
M3+L7 | 24.20±0.01Ab | 26.23±0.01Ac | 35.76±0.02Ab | 21.53±0.01Aab | 152.08±1.31Aa | 73.51±0.37Bbc | 101.03±1.25ABd |
表2 不同氮素下混播紫花苜蓿+多年生黑麦草下营养品质的变化
Tab.2 Changes of mixed sowing of alfalfa + perennial ryegrass on nutritional quality under different nitrogen levels
处理 Treatments | 粗蛋白 CP(%) | 干物质 DM(%) | 中性 洗涤纤维 NDF(%) | 酸性 洗涤纤维 ADF(%) | 饲料 相对价值 RFV | 总可 消化养分 TND | 单位面积 CP产量 (unit area)CP (%) | |
---|---|---|---|---|---|---|---|---|
N0 | M | 20.27±0.01Cc | 23.35±0.01Bc | 35.31±0.01Ab | 22.79±0.01Aab | 144.54±7.0Ab | 71.12±0.37Bc | 68.97±4.72Bb |
L | 17.65±0.02Bd | 28.90±0.02Ba | 47.31±0.01Aa | 25.48±0.01Aa | 132.59±4.41Ac | 71.19±0.94Bc | 25.80±4.61Cc | |
M7+L3 | 24.21±0.12Ba | 27.59±0.01Bb | 31.92±0.02Ac | 20.27±0.12Ac | 151.13±5.31Aa | 74.49±1.50Bb | 115.71±9.25Ba | |
M6+L4 | 22.32±0.01Bb | 24.98±0.01Bbc | 33.78±0.01Ab | 23.71±0.02Aab | 150.57±5.98Aa | 71.16±1.14Bc | 82.01±2.23Cb | |
M5+L5 | 23.32±0.01Bab | 25.17±0.01Bbc | 28.09±0.01Bd | 17.95±0.01Bd | 154.40±6.00Aa | 75.95±0.75Bb | 81.53±8.09Bb | |
M4+L6 | 23.65±0.01Aab | 26.43±0.03Babc | 24.51±0.07Ce | 15.38±0.03Ce | 153.08±4.2Aa | 78.05±0.54Aa | 74.81±14.25Bb | |
M3+L7 | 22.33±0.02Ab | 23.79±0.01Bce | 27.45±0.01Cd | 15.47±0.01Ce | 153.65±3.91Aa | 78.22±0.95Aa | 87.52±7.31Bb | |
N1 | M | 25.05±0.01Ab | 27.63±0.01Ac | 30.47±0.03Bb | 19.43±0.02Ba | 145.24±9.73Ab | 75.43±0.76Ab | 119.52±1.49Ab |
L | 17.43±0.03Ad | 33.76±0.01Aa | 48.98±0.02Ba | 19.62±0.05Ba | 130.76±0.30Ab | 72.54±1.40Ac | 48.73±4.78Ac | |
M7+L3 | 26.39±0.05Aa | 27.39±0.03Bc | 30.61±0.02Bb | 18.96±0.02Bab | 151.02±3.11Aa | 75.94±0.91Ab | 164.49±7.12Aa | |
M6+L4 | 24.86±0.02Ac | 30.02±0.02Aa | 30.43±0.01Bb | 20.02±0.03Ba | 150.82±1.31Aa | 74.91±0.48Ab | 175.01±5.47Aa | |
M5+L5 | 26.05±0.01Aa | 25.31±0.02Bc | 26.03±0.03Cc | 15.34±0.04Cb | 154.00±1.78Aa | 78.07±0.70Aa | 168.03±12.21Aa | |
M4+L6 | 22.44±0.03Ac | 19.29±0.03Cd | 29.33±0.02Bb | 18.08±0.02Bb | 152.90±7.36Aa | 74.99±0.66Bb | 112.92±9.31Ab | |
M3+L7 | 22.74±0.01Bc | 27.05±0.02Ac | 31.07±0.02Bb | 20.28±0.02Ba | 150.61±4.00Aa | 74.10±0.30Bbc | 116.01±8.62Ab | |
N2 | M | 23.06±0.01Bc | 27.86±0.01Abc | 27.65±0.02Bd | 18.64±0.01Bbc | 142.56±3.24Ab | 75.33±0.25Aab | 82.07±9.12Be |
L | 19.00±0.02Bf | 34.23±0.04Aa | 40.64±0.03Ba | 18.04±0.02Bbc | 136.49±3.29Ac | 74.32±0.19Ab | 48.19±8.06Bf | |
M7+L3 | 25.43±0.01Ba | 29.59±0.01Abc | 30.14±0.01Bc | 16.50±0.05Bc | 148.72±4.25Aab | 74.55±047Bb | 183.65±7.01Aa | |
M6+L4 | 22.00±0.03Bd | 28.95±0.02Abc | 29.33±0.01Bc | 19.19±0.01Babc | 150.18±3.91Aa | 74.52±1.04Ab | 121.01±4.43Bc | |
M5+L5 | 23.87±0.01Ab | 28.75±0.01Abc | 30.24±0.01Ac | 20.02±0.01Aabc | 148.12±3.14Aab | 77.83±4.38ABa | 141.85±9.98ABb | |
M4+L6 | 20.24±0.05Be | 31.69±0.01Aab | 35.10±0.01Ab | 23.55±0.03Aa | 152.02±4.77Aa | 70.53±0.90Cc | 106.19±9.99Ad | |
M3+L7 | 24.20±0.01Ab | 26.23±0.01Ac | 35.76±0.02Ab | 21.53±0.01Aab | 152.08±1.31Aa | 73.51±0.37Bbc | 101.03±1.25ABd |
图1 不同氮素水平下混播紫花苜蓿+多年生黑麦草不同茬次干草产量比较 注:年干草产量为三茬总和
Fig.1 Compares hay yield of mixed sowing alfalfa + perennial ryegrass in different stubbles under different nitrogen levels Note : The annual hay yield is the sum of three crops
处理 Treatments | 土地当量比(LER) | ||
---|---|---|---|
N0 | N1 | N2 | |
M7+L3 | 1.60±0.23Ba | 1.67±0.36Ba | 1.92±0.33Aa |
M6+L4 | 1.08±0.06Cb | 1.36±0.11Bb | 1.61±0.11Aab |
M5+L5 | 1.55±0.24Aa | 1.61±0.41Aa | 1.72±0.28Aab |
M4+L6 | 1.24±0.17Aab | 1.44±0.48Aab | 1.36±0.10Ab |
M3+L7 | 1.23±0.19Aab | 1.38±0.42Aab | 1.40±0.10Ab |
表3 不同氮素水平下混播紫花苜蓿+多年生黑麦草对土地当量比的变化
Tab.3 Changes of mixed sowing of alfalfa + perennial ryegrass on land equivalent ratio under different nitrogen levels
处理 Treatments | 土地当量比(LER) | ||
---|---|---|---|
N0 | N1 | N2 | |
M7+L3 | 1.60±0.23Ba | 1.67±0.36Ba | 1.92±0.33Aa |
M6+L4 | 1.08±0.06Cb | 1.36±0.11Bb | 1.61±0.11Aab |
M5+L5 | 1.55±0.24Aa | 1.61±0.41Aa | 1.72±0.28Aab |
M4+L6 | 1.24±0.17Aab | 1.44±0.48Aab | 1.36±0.10Ab |
M3+L7 | 1.23±0.19Aab | 1.38±0.42Aab | 1.40±0.10Ab |
处理 Treatments | CP(叶) CP (leaves) | CP(茎) CP (stems) | 茎(DM) Stem (DM) | 叶(DM) Leaf (DM) | 吸氮量 Nitrogen uptake | 氮素利用率 Nitrogen utilization rate | 株高(豆) Plant height (Legumes) | 株高(禾) Plant height (Grasses) | |
---|---|---|---|---|---|---|---|---|---|
N0 | L | 13.41±0.21Bb | 7.47±0.21Be | 33.31±0.31Bb | 28.89±0.31Ca | 26.10±1.91Ba | 49.5±0.30Bc | 31.6±1.96Ab | |
M7+L3 | 14.96±0.10Ab | 9.37±0.31Bd | 27.96±0.31Ad | 22.58±0.32Ac | 9.38±2.08Cc | 56.7±2.08Aa | 42.3±2.41Aa | ||
M6+L4 | 14.54±0.12Bb | 10.58±0.21Bc | 35.41±0.25Aa | 27.22±0.36Aab | 12.01±1.26Bbc | 55.5±1.50Aa | 26.6±1.91Ac | ||
M5+L5 | 14.10±0.13Ab | 10.24±0.51Bc | 32.60±0.23Bb | 27.97±0.88Aab | 9.81±1.06Cc | 54.4±1.21Aab | 26.8±0.20Bc | ||
M4+L6 | 17.60±0.50Aa | 12.30±0.52Ab | 23.89±0.24Ce | 22.44±0.84Cc | 14.01±1.46Bb | 56.4±3.24Aa | 34.0±2.64Ab | ||
M3+L7 | 16.71±0.51Aa | 13.62±0.41Aa | 33.52±0.65Ab | 26.21±0.56Ab | 14.89±2.35Cb | 51.7±1.61Bbc | 30.7±1.52Ab | ||
N1 | L | 13.59±0.21Bc | 9.44±0.21Bc | 36.39±0.01Aa | 33.82±0.21Aa | 57.96±6.87Aa | 54.2±0.85Ac | 34.7±1.47Ac | |
M7+L3 | 15.03±0.05Abc | 7.76±0.24Cd | 23.08±0.56Bd | 20.26±0.11Bf | 23.23±2.14Ae | 13.89±0.21Ac | 57.7±3.86Aabc | 42.8±1.96Aa | |
M6+L4 | 18.39±0.13Aa | 12.36±0.10Aa | 23.65±0.85Bd | 21.76±0.23Be | 31.22±3.57Ace | 19.21±0.35Abc | 57.3±5.74Aabc | 28.8±1.36Ad | |
M5+L5 | 16.21±0.25Ab | 11.99±0.05Aa | 31.17±0.95Bc | 25.04±0.35Bd | 34.60±3.36Ac | 24.80±0.33Ab | 56.5±3.74Abc | 32.3±2.41Ac | |
M4+L6 | 15.35±0.63Bbc | 10.35±0.09Bb | 32.10±0.23Abc | 26.14±0.25Bc | 38.19±7.22Abc | 24.19±0.72Ab | 61.3±2.08Aab | 38.0±1.73Ab | |
M3+L7 | 15.16±0.23Bbc | 9.85±0.56Bbc | 32.55±0.87Bb | 27.31±0.25Ab | 44.62±1.24Ab | 29.62±0.12Aa | 63.2±0.72Aa | 33.2±1.05Ac | |
N2 | L | 14.91±0.25Ace | 9.95±0.58Ab | 33.10±0.25Ba | 29.61±0.35Ba | 53.42±7.38Aa | 50.1±0.90Bc | 33.7±1.13Abc | |
M7+L3 | 15.72±0.23Ac | 10.14±0.36Ae | 27.06±0.35Aa | 22.91±0.58Ad | 16.07±3.37Be | 6.73±0.35Be | 59.7±0.57Aab | 39.1±4.41Aa | |
M6+L4 | 18.65±0.35Aa | 12.03±0.58Af | 24.81±0.54Ba | 19.74±0.65Be | 29.30±3.87Ac | 17.29±0.38Bbc | 58.1±1.87Ab | 28.8±0.58Ac | |
M5+L5 | 15.27±0.23Ac | 9.06±0.56Ba | 35.92±0.56Aa | 26.99±0.98Cb | 21.79±2.01Be | 11.99±0.30Bce | 56.3±3.75Ab | 29.3±1.08ABc | |
M4+L6 | 16.98±0.35Ab | 12.14±0.65Ac | 31.39±0.58Ba | 29.18±0.58Aa | 32.20±2.56bAc | 18.20±0.25Bb | 59.5±1.80Aab | 34.7±3.40Aab | |
M3+L7 | 14.12±0.68Ce | 9.35±0.65Bd | 30.03±0.57Ca | 23.81±0.54Bc | 38.77±2.54b | 23.77±0.25Ba | 61.9±0.98Aa | 35.6±3.54Aab |
表4 不同氮素水平下混播紫花苜蓿+多年生黑麦草氮素利用率变化
Tab.4 Changes of mixed sowing of alfalfa + perennial ryegrass on nitrogen utilization under different nitrogen utilization rate
处理 Treatments | CP(叶) CP (leaves) | CP(茎) CP (stems) | 茎(DM) Stem (DM) | 叶(DM) Leaf (DM) | 吸氮量 Nitrogen uptake | 氮素利用率 Nitrogen utilization rate | 株高(豆) Plant height (Legumes) | 株高(禾) Plant height (Grasses) | |
---|---|---|---|---|---|---|---|---|---|
N0 | L | 13.41±0.21Bb | 7.47±0.21Be | 33.31±0.31Bb | 28.89±0.31Ca | 26.10±1.91Ba | 49.5±0.30Bc | 31.6±1.96Ab | |
M7+L3 | 14.96±0.10Ab | 9.37±0.31Bd | 27.96±0.31Ad | 22.58±0.32Ac | 9.38±2.08Cc | 56.7±2.08Aa | 42.3±2.41Aa | ||
M6+L4 | 14.54±0.12Bb | 10.58±0.21Bc | 35.41±0.25Aa | 27.22±0.36Aab | 12.01±1.26Bbc | 55.5±1.50Aa | 26.6±1.91Ac | ||
M5+L5 | 14.10±0.13Ab | 10.24±0.51Bc | 32.60±0.23Bb | 27.97±0.88Aab | 9.81±1.06Cc | 54.4±1.21Aab | 26.8±0.20Bc | ||
M4+L6 | 17.60±0.50Aa | 12.30±0.52Ab | 23.89±0.24Ce | 22.44±0.84Cc | 14.01±1.46Bb | 56.4±3.24Aa | 34.0±2.64Ab | ||
M3+L7 | 16.71±0.51Aa | 13.62±0.41Aa | 33.52±0.65Ab | 26.21±0.56Ab | 14.89±2.35Cb | 51.7±1.61Bbc | 30.7±1.52Ab | ||
N1 | L | 13.59±0.21Bc | 9.44±0.21Bc | 36.39±0.01Aa | 33.82±0.21Aa | 57.96±6.87Aa | 54.2±0.85Ac | 34.7±1.47Ac | |
M7+L3 | 15.03±0.05Abc | 7.76±0.24Cd | 23.08±0.56Bd | 20.26±0.11Bf | 23.23±2.14Ae | 13.89±0.21Ac | 57.7±3.86Aabc | 42.8±1.96Aa | |
M6+L4 | 18.39±0.13Aa | 12.36±0.10Aa | 23.65±0.85Bd | 21.76±0.23Be | 31.22±3.57Ace | 19.21±0.35Abc | 57.3±5.74Aabc | 28.8±1.36Ad | |
M5+L5 | 16.21±0.25Ab | 11.99±0.05Aa | 31.17±0.95Bc | 25.04±0.35Bd | 34.60±3.36Ac | 24.80±0.33Ab | 56.5±3.74Abc | 32.3±2.41Ac | |
M4+L6 | 15.35±0.63Bbc | 10.35±0.09Bb | 32.10±0.23Abc | 26.14±0.25Bc | 38.19±7.22Abc | 24.19±0.72Ab | 61.3±2.08Aab | 38.0±1.73Ab | |
M3+L7 | 15.16±0.23Bbc | 9.85±0.56Bbc | 32.55±0.87Bb | 27.31±0.25Ab | 44.62±1.24Ab | 29.62±0.12Aa | 63.2±0.72Aa | 33.2±1.05Ac | |
N2 | L | 14.91±0.25Ace | 9.95±0.58Ab | 33.10±0.25Ba | 29.61±0.35Ba | 53.42±7.38Aa | 50.1±0.90Bc | 33.7±1.13Abc | |
M7+L3 | 15.72±0.23Ac | 10.14±0.36Ae | 27.06±0.35Aa | 22.91±0.58Ad | 16.07±3.37Be | 6.73±0.35Be | 59.7±0.57Aab | 39.1±4.41Aa | |
M6+L4 | 18.65±0.35Aa | 12.03±0.58Af | 24.81±0.54Ba | 19.74±0.65Be | 29.30±3.87Ac | 17.29±0.38Bbc | 58.1±1.87Ab | 28.8±0.58Ac | |
M5+L5 | 15.27±0.23Ac | 9.06±0.56Ba | 35.92±0.56Aa | 26.99±0.98Cb | 21.79±2.01Be | 11.99±0.30Bce | 56.3±3.75Ab | 29.3±1.08ABc | |
M4+L6 | 16.98±0.35Ab | 12.14±0.65Ac | 31.39±0.58Ba | 29.18±0.58Aa | 32.20±2.56bAc | 18.20±0.25Bb | 59.5±1.80Aab | 34.7±3.40Aab | |
M3+L7 | 14.12±0.68Ce | 9.35±0.65Bd | 30.03±0.57Ca | 23.81±0.54Bc | 38.77±2.54b | 23.77±0.25Ba | 61.9±0.98Aa | 35.6±3.54Aab |
指标 Indexes | 处理Treatments | ||
---|---|---|---|
混播比例 Mixture ratio | 氮素水平 Nitrogen level | 氮素水平* 混播比例 Nitrogen level *Mixture ratio | |
粗蛋白 CP(%) | 111.99** | 7.17** | 22.41** |
干物质 DM(%) | 10.83** | 31.28** | 12.44** |
中性洗涤纤维 NDF(%) | 163.66** | 0.21* | 23.51** |
酸性洗涤纤维 ADF(%) | 4.36** | 1.62* | 9.94** |
饲料相对价值 RFV(%) | 17.37** | 3.30 | 4.62** |
总可消化养分 TND(%) | 10.25** | 2.74 | 13.08** |
单位面积CP产量 (unit area)CP (%) | 18.12** | 23.81** | 1.78* |
叶 leaves CP(%) | 21.12** | 4.31 | 3.20 |
茎stems CP(%) | 15.41** | 6.42 | 19.52** |
叶 leaves DM(%) | 12.10** | 25.62** | 18.20** |
茎stems DM(%) | 11.52** | 8.78 | 24.10** |
吸氮量 nitrogen uptake | 16.52** | 25.62** | 7.42 |
氮素利用率 Nitrogen utilization rate(%) | 18.20** | 28.20** | 5.82 |
豆科株高 Legumes height plant height/cm | 25.42** | 11.46 | 3.18 |
禾本科株高 Plant height of Grasses/cm | 10.20* | 4.52 | 6.23 |
表5 氮素水平 、混播比例和氮素水平*混播比例交互作用下紫花苜蓿+多年生黑麦草的变化
Tab.5 Changes of nitrogen level, mixed sowing ratio and nitrogen level * mixed sowing ratio interaction on alfalfa + perennial ryegrass
指标 Indexes | 处理Treatments | ||
---|---|---|---|
混播比例 Mixture ratio | 氮素水平 Nitrogen level | 氮素水平* 混播比例 Nitrogen level *Mixture ratio | |
粗蛋白 CP(%) | 111.99** | 7.17** | 22.41** |
干物质 DM(%) | 10.83** | 31.28** | 12.44** |
中性洗涤纤维 NDF(%) | 163.66** | 0.21* | 23.51** |
酸性洗涤纤维 ADF(%) | 4.36** | 1.62* | 9.94** |
饲料相对价值 RFV(%) | 17.37** | 3.30 | 4.62** |
总可消化养分 TND(%) | 10.25** | 2.74 | 13.08** |
单位面积CP产量 (unit area)CP (%) | 18.12** | 23.81** | 1.78* |
叶 leaves CP(%) | 21.12** | 4.31 | 3.20 |
茎stems CP(%) | 15.41** | 6.42 | 19.52** |
叶 leaves DM(%) | 12.10** | 25.62** | 18.20** |
茎stems DM(%) | 11.52** | 8.78 | 24.10** |
吸氮量 nitrogen uptake | 16.52** | 25.62** | 7.42 |
氮素利用率 Nitrogen utilization rate(%) | 18.20** | 28.20** | 5.82 |
豆科株高 Legumes height plant height/cm | 25.42** | 11.46 | 3.18 |
禾本科株高 Plant height of Grasses/cm | 10.20* | 4.52 | 6.23 |
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