Effects of nitrogen application and mowing on yield and quality of forage in degraded grassland in northwest Liaoning Province

doi:10.11686/cyxb2020292

Abstract

Abstract:

Nitrogen application and mowing treatment are effective management methods for natural grassland. In order to explore the efficient use of degraded grassland， the degraded grassland in the pastoral transitional zone of northwestern Liaoning Province was taken as the research object， and nitrogen fertilizer addition （0， 10 g N·m^-2·yr^-1） and mowing treatment （stubble height at 3， 6， 12 cm and no mowing） experiment were set up， by measuring forage yield and 22 forage quality indicators for two consecutive years， to analyze the effects of nitrogen application and mowing on the yield and quality of degraded grasslands in northwestern Liaoning Province. The results showed that： 1） Nitrogen application significantly increased the forage yield， crude protein in 2018 and 2019， and the forage net energy for lactation， net energy for maintenance， net energy for gain， total digestible nutrients， MT （kg milk·t^-1 DM） in 2019， nitrogen application significantly reduced the acid detergent fiber in 2019， and promoted the increase of forage yield， net energy and nutrient content in degraded grassland. 2） Mowing treatment significantly affected the forage neutral detergent fiber， calcium content， phosphorus content， in vitro dry-matter digestibility and relative feeding value in 2018 and 2019， and the forage crude ash and magnesium content in 2018， and the forage non-fibrous carbohydrate， net energy for maintenance， net energy for gain， total digestible nutrients and relative forage quality in 2019， while the degraded grassland was properly utilized， the quality of forage grass also improved greatly. 3） The interaction of nitrogen application and mowing treatment had a significant impact on the crude protein， crude ash， net energy for lactation and MT of degraded grassland. 4） The forage crude ash， acid detergent fiber， neutral detergent fiber， digestible neutral detergent fiber， neutral detergent fiber digestibility， magnesium content， net energy for lactation， net energy for maintenance， net energy for gain， MT， total digestible nutrients as well as the relative feeding value， a total of 12 nutritional quality index were significant correlated with crude protein. The results showed that nitrogen application and mowing treatment as effective management and utilization way of degraded grassland， both the independent or interactive effects had different degrees of positive feedback on the improvement of forage yield and quality， the yield and quality of forage grass were the highest under the treatment of nitrogen application combined with mowing of stubble height at 3 cm， which could provide a theoretical reference for the rational use and sustainable development of degraded grassland.

Key words: degraded grassland, nitrogen fertilizer, mowing, forage yield, forage quality

Jing-dong ZHAO, Yan-tao SONG, Xin-lei XU, Wuyunna. Effects of nitrogen application and mowing on yield and quality of forage in degraded grassland in northwest Liaoning Province[J]. Acta Prataculturae Sinica, 2021, 30(8): 36-48.

Figures/Tables 8

References 46

1	Fang J Y， Geng X Q， Zhao X， et al. How many areas of grasslands are there in China？ Chinese Science Bulletin， 2018， 63（17）： 1731-1739.
	方精云，耿晓庆，赵霞，等. 我国草地面积有多大？科学通报， 2018， 63（17）： 1731-1739.
2	Na J， Huang L H， Zhang L， et al. Current status of grassland productivity in Northeast China and countermeasures for sustainable development. Chinese Journal of Grassland， 2019， 41（6）： 152-164.
	那佳，黄立华，张璐，等. 我国东北草地生产力现状及可持续发展对策. 中国草地学报， 2019， 41（6）： 152-164.
3	Hou W， Zhang S W， Zhang Y Z， et al. Dynamics in spatial and temporal change of sandy land in Horqin since the 50s of the 20th century. Chinese Journal of Ecological Agriculture， 2006， 14（1）： 206-208.
	侯伟，张树文，张养贞，等. 20世纪50年代以来科尔沁沙地景观时空动态变化探析. 中国生态农业学报， 2006， 14（1）： 206-208.
4	Yu Y Q， Zhang L J， Gao K. Impacts of enclosure on sandy land plant functional and species diversity. Journal of Inner Mongolia University for Nationalities （Natural Science）， 2015， 30（3）： 240-244.
	于永奇，张丽娟，高凯. 围封与放牧对沙地植物功能群及多样性的影响. 内蒙古民族大学学报（自然科学版）， 2015， 30（3）： 240-244.
5	Yang J， Sun Z J， Bademu Q Q G， et al. Effects of enclosure years on vegetation functional groups diversity and soil total nutrients characters of sandy desert grassland. Chinese Journal of Grassland， 2018， 40（4）： 102-110.
	杨静，孙宗玖，巴德木其其格，等. 封育对草地植被功能群多样性及土壤养分特征的影响. 中国草地学报， 2018， 40（4）： 102-110.
6	Wang W H， Wang Y L， Zhao J M. Current situation of land desertification in northwest Liaoning Province and countermeasures. Geology and Resources， 2010， 19（1）： 50-52.
	王炜航，王咏林，赵净民. 辽西北地区土地沙漠化现状及防治对策. 地质与资源， 2010， 19（1）： 50-52.
7	Cuevas J G， Quesne C L. Low vegetation recovery after short-term cattle exclusion on Robinson Crusoe Island. Plant Ecology， 2006， 183（1）： 105-124.
8	Sun J， Liu M， Fu B L， et al. Reconsidering the efficiency of grazing exclusion using fences on the Tibetan Plateau. Science Bulletin， 2020， 65（16）： 1405-1414.
9	Zhang Y， Le R F， Gong X L， et al. Effect of fertilization and mowing on alpine meadow productivity. Prataculture & Animal Husbandry， 2008， 27（3）： 6-9.
	张云，勒瑞芳，巩晓兰，等. 施肥刈割对高寒草甸生产力的影响. 草业与畜牧， 2008， 27（3）： 6-9.
10	Li S Q， Di X Y， Wu D M， et al. Effects of sewage sludge and nitrogen fertilizer on herbage growth and soil fertility improvement in restoration of the abandoned opencast mining areas in Shanxi， China. Environmental Earth Sciences， 2013， 70（7）： 3323-3333.
11	Zhu J， Zhang B， Tan Z L， et al. Research progress on the effects of mowing on the biomass and quality of herbage. Pratacultural Science， 2009， 26（2）： 80-85.
	朱珏，张彬，谭支良，等. 刈割对牧草生物量和品质影响的研究进展. 草业科学， 2009， 26（2）： 80-85.
12	Jia S G， Huang R L. Research progress on the effect of mowing on forage quality. Feed China， 2014（3）： 45-47.
	贾淑庚，黄仁录. 刈割对牧草品质的影响研究进展. 饲料广角， 2014（3）： 45-47.
13	Lv L Y， Zhao Y， Chen X， et al. The effect of fencing on the restoration of degraded sandy grassland underground breeding bank. Heilongjiang Animal Science and Veterinary Medicine， 2019， 62（13）： 93-96， 102， 179-180.
	吕林有，赵艳，陈曦，等. 围封对退化沙质草地地下繁殖体库恢复的影响. 黑龙江畜牧兽医， 2019， 62（13）： 93-96， 102，179-180.
14	Xu P. Study on the community characteristics of sandy grassland in Zhangwu area for 10 years. Environmental Protection and Circular Economy， 2012， 32（8）： 61-65.
	徐鹏. 彰武地区围封 10 年沙化草地的群落特征研究. 环境保护与循环经济， 2012， 32（8）： 61-65.
15	Xiong Y， Xu Q F， Yu Z， et al. Evaluation of nutritional and feeding value of oat hay from different regions. Pratacultural Science， 2008， 35（10）： 2457-2462.
	熊乙，许庆方，玉柱，等. 不同产地燕麦干草养分及饲用价值. 草业科学， 2018， 35（10）： 2457-2462.
16	Chaudhary J D， Pavaya R P， Malav J K， et al. Effect of nitrogen and potassium on yield， nutrient content and uptake by forage sorghum ［Sorghum bicolor （L.） Moench］ on loamy sand. International Journal of Chemical Studies， 2018， 6（2）： 761-765.
17	Yang H M， Wang Z N， Ji C R. Research progress in the dynamics of carbon and nitrogen in forage after cutting and grazing. Chinese Journal of Grassland， 2013， 35（4）： 102-109， 120.
	杨惠敏，王振南，吉春荣. 刈割和放牧后牧草碳氮动态研究进展. 中国草地学报， 2013， 35（4）： 102-109， 120.
18	Inyang U， Vendramini J M B， Sellers B， et al. Harvest frequency and stubble height affect herbage accumulation， nutritive value， and persistence of ‘Mulato Ⅱ’ Brachiariagrass. Forage and Grazinglands， 2010， 8（1）： 1-7.
19	Shi Y， Ma Y L， Ma W H， et al. Grass yield and forage quality in Chinese grasslands： Relationship between patterns and environmental factors. Chinese Science Bulletin， 2013， 58（3）： 226-239.
	石岳，马殷雷，马文红，等. 中国草地的产草量和牧草品质：格局及其与环境因子之间的关系. 科学通报， 2013， 58（3）： 226-239.
20	Wu C X， Zhou Z Y， Zhuang G H， et al. Nutrient content and seasonal dynamics of the aboveground parts of strong xerophytes Zygophyllum xanthoxylum and Reaumuria soongorica. Pratacultural Science， 2004， 21（3）： 30-34.
	吴彩霞，周志宇，庄光辉，等. 强旱生植物霸王和红砂地上部营养物质含量及其季节动态. 草业科学， 2004， 21（3）： 30-34.
21	Li S L， Shi H T， Cao Z J， et al. Scientific utilization and evaluation technology of roughage. Chinese Journal of Animal Nutrition， 2014， 26（10）： 3149-3158.
	李胜利，史海涛，曹志军，等. 粗饲料科学利用及评价技术. 动物营养学报， 2014， 26（10）： 3149-3158.
22	Hernández G N， García J A P， Ramos A P， et al. Forage quality and agronomic characterization of annual forage species in North-Central Mexico. Revista Mexicana de Ciencias Pecuarias， 2010， 1（2）： 85-98.
23	Yao X X， Gong X Y， Zhang L P， et al. Effects of grazing and long-term fencing on nutritive values of dominant species in alpine meadows of Qilian Mountains. Acta Agrestia Sinica， 2018， 26（6）： 1354-1362.
	姚喜喜，宫旭胤，张利平，等. 放牧和长期围封对祁连山高寒草甸优势牧草营养品质的影响. 草地学报， 2018， 26（6）： 1354-1362.
24	Feng Y， Yu Y Z， Zhong L Q， et al. The nutritional composition and digestion of plants foraged by red deer （Cervus elaphus xanthopygus） in Northeast China. Journal of Forestry Research， 2018， 29（3）： 851-858.
25	Minson D J. Forage in ruminant nutrition. San Diego： Academic Press， 1990： 310-331.
26	Rubio E E S， Rodríguez D P， Reyes L O， et al. Tropical trees and shrubs forage potential for sheep feeding. Tecnica Pecuaria en Mexico， 2004， 42（2）： 129-144.
27	Bai Y T， Wei Z J， Yan R R， et al. Effects of fertilizer application on the yield of forage and nutrient content in Leymus chinensis mowing meadow. Chinese Journal of Grassland， 2017， 39（4）： 60-66.
	白玉婷，卫智军，闫瑞瑞，等. 施肥对羊草割草地牧草产量及品质的影响. 中国草地学报， 2017， 39（4）： 60-66.
28	Wang D P， Chen W J， Li Y M， et al. Effects of mowing on forage yield of different functional groups in Stipagrandis steppe. Inner Mongolia Grassland， 2008， 30（3）： 31-36.
	王德平，陈万杰，李雅男，等. 刈割对大针茅草原不同功能群牧草产量的影响. 内蒙古草业， 2018， 30（3）： 31-36.
29	Wu S J. The effect of cutting number of times and applying fertilizer level on yield and quality of S.bicolor×S.sudanese. Heilongjiang Agricultural Sciences， 2006（6）： 36-38.
	吴姝菊. 刈割次数与施肥水平对高丹草产量和品质的影响. 黑龙江农业科学， 2006（6）： 36-38.
30	Wei Z H， Wang D M， Liu J X. Progress in studies on nutrient metabolism of non-fibrous carbohydrates in ruminants. Chinese Journal of Animal Science， 2008， 54（5）： 6-10.
	韦子海，王迪铭，刘建新. 反刍动物日粮中非纤维性碳水化合物营养代谢的研究进展. 中国畜牧杂志， 2018， 54（5）： 6-10.
31	Song S D， Chen G J， Guo C H， et al. Effects of exogenous fibrolytic enzyme supplementation to diets with different NFC/NDF ratios on the growth performance， nutrient digestibility and ruminal fermentation in Chinese domesticated black goats. Animal Feed Science and Technology， 2018， 236： 170-177.
32	Ma T， Tu Y， Zhang N F， et al. Effect of the ratio of non-fibrous carbohydrates to neutral detergent fiber and protein structure on intake， digestibility， rumen fermentation， and nitrogen metabolism in lambs. Asian-Australasian Journal of Animal Sciences， 2015， 28（10）： 1419-1426.
33	Li L J， Cheng S R， Diao Q Y， et al. Influences of dietary non-fiber carbohydrate/neutral detergent fiber on growth performance and nutrient digestion and metabolism of meat calves. Chinese Journal of Animal Nutrition， 2017， 29（6）： 2143-2152.
	李岚捷，成述儒，刁其玉，等. 饲粮非纤维性碳水化合物/中性洗涤纤维对肉犊牛生长性能和营养物质消化代谢的影响. 动物营养学报， 2017， 29（6）： 2143-2152.
34	Hu H L， Lu D X， Liu D C， et al. Effects of different dietary NFC/NDF ratios on ruminal pH， VFA and lactate content in dairy goats. Chinese Journal of Animal Nutrition， 2010， 22（3）： 595-601.
	胡红莲，卢德勋，刘大程，等. 日粮不同NFC/NDF比对奶山羊瘤胃pH、挥发性脂肪酸及乳酸含量的影响. 动物营养学报， 2010， 22（3）： 595-601.
35	Du Z C， Du J Y. A comparative study on the mineral elements contents of some tame fine grasses. Journal of Sichuan Grassland， 2003（1）： 26-28， 41.
	杜占池，杜菁昀. 几种优良人工牧草矿质元素含量的比较研究. 四川草原， 2003（1）： 26-28， 41.
36	Xi D M， Deng W D， Mao H M. The relationship between the contents of mineral and feed proximate compositions of common plants in Yunnan Province. Journal of Domestic Animal Ecology， 2007， 28（2）： 94-97.
	席冬梅，邓卫东，毛华明. 云南省常见植物饲料矿质元素与常规营养成分间的关系研究. 家畜生态学报， 2007， 28（2）： 94-97.
37	Zhang Y C. The effect of magnesium on plants. Agricultural Development and Equipment， 2018（11）： 166， 192.
	张亚晨. 简述镁元素对植物的作用. 农业开发与装备， 2018（11）： 166， 192.
38	Li T C， Chen G C， Cao G M， et al. Characteristics of mineral constant elements K， Ca and Mg in degraded grassland and enclosure grassland on the north bank of Qinghai Lake. Acta Agrestia Sinica， 2011， 19（5）： 752-759.
	李天才，陈桂琛，曹广民，等. 青海湖北岸退化草地和封育草地中钾、钙、镁等矿质常量元素特征. 草地学报， 2011， 19（5）： 752-759.
39	Liang J Y， Jiao T， Wu J P， et al. The relationship between seasonal forage digestibility and forage nutritive value in different grazing pastures. Acta Prataculturae Sinica， 2015， 24（6）： 108-115.
	梁建勇，焦婷，吴建平，等. 不同类型草地牧草消化率季节动态与营养品质的关系研究. 草业学报， 2015， 24（6）： 108-115.
40	Kong Q B， Yan L F， Su J B， et al. Determination of net energy requirement for Holstein cows and its influencing factors. Chinese Journal of Animal Husbandry， 2006， 42（23）： 41-44.
	孔庆斌，闫利芳，苏俊兵，等. 荷斯坦奶牛维持净能需要量的测定及影响因素. 中国畜牧杂志， 2006， 42（23）： 41-44.
41	Li Z Q. Quality evaluation of Medicago sativa hay. China Dairy Cattle， 2013（15）： 7-9.
	李志强. 苜蓿干草质量评价. 中国奶牛， 2013（15）： 7-9.
42	Rohweder D A， Barnes R F， Jorgensen N. Proposed hay grading standards based on laboratory analyses for evaluating quality. Journal of Animal Science， 1978， 47（3）： 747-759.
43	Wang X T， Wang W， Liang C Z， et al. Cleistogenes squarrosa population at different restorative succession stages in Inner Mongolia of China： A point pattern analysis. Chinese Journal of Applied Ecology， 2013， 24（7）： 1793-1800.
	王鑫厅，王炜，梁存柱，等. 不同恢复演替阶段糙隐子草种群的点格局分析. 应用生态学报， 2013， 24（7）： 1793-1800.
44	Huang J， Wang G F， An S Z， et al. Effects of nitrogen fertilization on the vegetation structure and biomass of degraded meadow and soil fertility. Pratacultural Science， 2009， 26（3）： 75-78.
	黄军，王高峰，安沙舟，等. 施氮对退化草甸植被结构和生物量及土壤肥力的影响. 草业科学， 2009， 26（3）： 75-78.
45	Xu Z W， Ren H Y， Cai J P， et al. Effects of experimentally-enhanced precipitation and nitrogen on resistance， recovery and resilience of a semi-arid grassland after drought. Oecologia， 2014， 176（4）： 1187-1197.
46	Liu Y N， Ma C， Yu X Y， et al. Nitrogen application rate for keeping nitrogen balance in wheat-soil system in Weibei rainfed areas under different rainfall years. Journal of Plant Nutrition and Fertilizers， 2018， 24（3）： 569-578.
	刘艳妮，马臣，于昕阳，等. 基于不同降水年型渭北旱塬小麦-土壤系统氮素表观平衡的氮肥用量研究. 植物营养与肥料学报， 2018， 24（3）： 569-578.

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