Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (9): 51-61.DOI: 10.11686/cyxb2020330
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Jing-dong ZHAO(), Wuyunna, Yan-tao SONG()
Received:
2020-07-14
Revised:
2020-11-23
Online:
2021-08-30
Published:
2021-08-30
Contact:
Yan-tao SONG
Jing-dong ZHAO, Wuyunna, Yan-tao SONG. Effect of short-term fencing on the forage quality of plant communities in degraded grassland in Northwestern Liaoning[J]. Acta Prataculturae Sinica, 2021, 30(9): 51-61.
处理 Treatment | 年份 Year | 群落高度 Community height (cm) | 群落盖度 Community coverage (%) | 地上生物量 Aboveground biomass (g·m-2) | 枯落物量 Plant litter (g·m-2) |
---|---|---|---|---|---|
围封Fencing | 2017 | 55.8±7.8 | 90.8±5.3 | 291.35±44.82 | 25.37±9.54 |
2018 | 54.2±5.8 | 70.0±7.6 | 154.18±21.39 | 103.29±20.82 | |
2019 | 49.6±7.5 | 67.4±6.6 | 213.83±19.65 | 227.95±31.57 | |
放牧Grazing | 2017 | 42.4±4.1 | 61.2±7.3 | 140.53±38.60 | 30.51±9.77 |
2018 | 21.1±1.6 | 48.0±2.0 | 89.50±4.66 | 49.70±6.40 | |
2019 | 14.4±1.1 | 43.8±3.7 | 44.66±6.11 | 48.76±9.15 | |
LSD0.05 | 14.00 | 16.00 | 75.07 | 47.23 |
Table 1 Effects of fencing treatment and year on plant community characteristics (Mean±SE)
处理 Treatment | 年份 Year | 群落高度 Community height (cm) | 群落盖度 Community coverage (%) | 地上生物量 Aboveground biomass (g·m-2) | 枯落物量 Plant litter (g·m-2) |
---|---|---|---|---|---|
围封Fencing | 2017 | 55.8±7.8 | 90.8±5.3 | 291.35±44.82 | 25.37±9.54 |
2018 | 54.2±5.8 | 70.0±7.6 | 154.18±21.39 | 103.29±20.82 | |
2019 | 49.6±7.5 | 67.4±6.6 | 213.83±19.65 | 227.95±31.57 | |
放牧Grazing | 2017 | 42.4±4.1 | 61.2±7.3 | 140.53±38.60 | 30.51±9.77 |
2018 | 21.1±1.6 | 48.0±2.0 | 89.50±4.66 | 49.70±6.40 | |
2019 | 14.4±1.1 | 43.8±3.7 | 44.66±6.11 | 48.76±9.15 | |
LSD0.05 | 14.00 | 16.00 | 75.07 | 47.23 |
指标Index | 围封Fencing | 年份Year | 围封×年份Fencing×year |
---|---|---|---|
非纤维性碳水化合物Non-fibrous carbohydrate | ** | * | ns |
酸性洗涤纤维Acid detergent fiber | ** | ns | ns |
粗灰分Crude ash | *** | ns | * |
粗脂肪Ether extract | *** | * | * |
粗蛋白Crude protein | *** | *** | * |
木质素Lignin | *** | ns | * |
可溶性碳水化合物Water soluble carbohydrate | ns | * | * |
中性洗涤纤维Neutral detergent fiber | ns | * | * |
Table 2 Analysis of variance of repeated measurements of nutrient composition content of herbage by fencing treatment and year
指标Index | 围封Fencing | 年份Year | 围封×年份Fencing×year |
---|---|---|---|
非纤维性碳水化合物Non-fibrous carbohydrate | ** | * | ns |
酸性洗涤纤维Acid detergent fiber | ** | ns | ns |
粗灰分Crude ash | *** | ns | * |
粗脂肪Ether extract | *** | * | * |
粗蛋白Crude protein | *** | *** | * |
木质素Lignin | *** | ns | * |
可溶性碳水化合物Water soluble carbohydrate | ns | * | * |
中性洗涤纤维Neutral detergent fiber | ns | * | * |
项目Item | 钙Ca | 镁Mg | 钾K | 磷P |
---|---|---|---|---|
围封Fencing | *** | ** | ns | *** |
年份Year | ns | * | * | ns |
围封×年份Fencing×year | ns | ns | ns | ** |
Table 3 Variance analysis of repeated measurements of herbage mineral element content by fencing treatment and year
项目Item | 钙Ca | 镁Mg | 钾K | 磷P |
---|---|---|---|---|
围封Fencing | *** | ** | ns | *** |
年份Year | ns | * | * | ns |
围封×年份Fencing×year | ns | ns | ns | ** |
年份Year | 围封Fencing | 放牧Grazing |
---|---|---|
2017 | 2.613±0.094 | 2.875±0.119 |
2018 | 2.545±0.140 | 1.777±0.106 |
2019 | 2.508±0.212 | 2.195±0.110 |
LSD0.05 | 0.434 | 0.311 |
Table 4 Calcium and phosphorus ratio of forage under different treatments for three years
年份Year | 围封Fencing | 放牧Grazing |
---|---|---|
2017 | 2.613±0.094 | 2.875±0.119 |
2018 | 2.545±0.140 | 1.777±0.106 |
2019 | 2.508±0.212 | 2.195±0.110 |
LSD0.05 | 0.434 | 0.311 |
指标Index | 围封Fencing | 年份Year | 围封×年份Fencing×year |
---|---|---|---|
体外干物质消化率In vitro dry-matter digestibility | ** | ** | ns |
维持净能Net energy for maintenance | *** | ** | *** |
增重净能Net energy for gain | ** | ** | *** |
总可消化养分Total digestible nutrients | *** | ** | *** |
中性洗涤纤维消化率Neutral detergent fiber digestibility | ** | * | ** |
相对牧草质量Relative forage quality | ns | ** | ** |
奶吨指数Milk perton index | *** | * | ** |
可消化中性洗涤纤维Digestible neutral detergent fiber | ** | ns | * |
产奶净能Net energy for lactation | *** | * | * |
相对饲喂价值Relative feeding value | ** | ns | * |
Table 5 Analysis of variance of repeated measurements of forage feeding value by fencing treatment and year
指标Index | 围封Fencing | 年份Year | 围封×年份Fencing×year |
---|---|---|---|
体外干物质消化率In vitro dry-matter digestibility | ** | ** | ns |
维持净能Net energy for maintenance | *** | ** | *** |
增重净能Net energy for gain | ** | ** | *** |
总可消化养分Total digestible nutrients | *** | ** | *** |
中性洗涤纤维消化率Neutral detergent fiber digestibility | ** | * | ** |
相对牧草质量Relative forage quality | ns | ** | ** |
奶吨指数Milk perton index | *** | * | ** |
可消化中性洗涤纤维Digestible neutral detergent fiber | ** | ns | * |
产奶净能Net energy for lactation | *** | * | * |
相对饲喂价值Relative feeding value | ** | ns | * |
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