Effects of No-tillage Reseeding on Productivity and Nutritional Quality of Degraded Grassland in Northern China

doi:10.11733/j.issn.1007-0435.2021.11.025

Acta Agrestia Sinica ›› 2021, Vol. 29 ›› Issue (11): 2583-2590.DOI: 10.11733/j.issn.1007-0435.2021.11.025

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Effects of No-tillage Reseeding on Productivity and Nutritional Quality of Degraded Grassland in Northern China

YUE Li-nan¹, SHI Shang-li², QI Juan², YANG Pei-zhi³, LIU Gang⁴, LIU Wen-hui⁵, ZHANG Ying-jun¹, JING Jing-ying¹

1. College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China;
2. College of Prataculture College, Gansu Agricultural University, Lanzhou, Gansu Province 730000, China;
3. College of Prataculture and Grassland, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
4. Sichuan Academy of Grassland Science, Chengdu, Sichuan Province 611731, China;
5. Qinghai Academy of Animal Husbandry and Veterinary Sciences, Xining, Qinghai Province 810016, China

Received:2021-04-30 Revised:2021-06-15 Online:2021-11-15 Published:2021-12-06

免耕补播对北方退化草地生产力及营养品质的影响

岳丽楠¹, 师尚礼², 祁娟², 杨培志³, 刘刚⁴, 刘文辉⁵, 张英俊¹, 荆晶莹¹

1. 中国农业大学草业科学与技术学院, 北京 100193;
2. 甘肃农业大学草业学院, 甘肃兰州 730000;
3. 西北农林科技大学草业与草原学院, 陕西杨凌 712100;
4. 四川省草原科学研究院, 四川成都 611731;
5. 青海省畜牧兽医科学院, 青海西宁 810016

通讯作者: 荆晶莹,E-mail:jingying.jing@cau.edu.cn
作者简介:岳丽楠(1997-),女,汉族,黑龙江齐齐哈尔人,硕士研究生,研究方向为草地生态与管理,E-mail:1523527025@qq.com
基金资助:
九三学社中央草原生态修复与生产力恢复项目；国家自然科学基金（31972957）；中国农业大学人才培育发展支持计划共同资助

Abstract

Abstract: No-tillage reseeding improvement has become one of the important measures to restore the productivity of degraded grassland. In order to explore the effects of reseeding leguminous and gramineous forages on productivity and nutritional quality of degraded grasslands,three treatments consisting of no-reseeding,reseeding Medicago sativa L(ZW) mixed with Bromus inermis Leyss or Elymus nutans Griseb,and reseeding Medicago falcata L(HW) mixed with Bromus inermis Leyss or Elymus nutans Griseb were conducted in four sites:Ruoergai (Sichuan),Xiahe (Gansu),Qilian (Qinghai) and Yulin (Shaanxi). We found that the proportion of leguminous forages and the total above-ground biomass significantly increased after reseeding Medicago sativa L/Medicago falcata L and gramineous forages (P<0.05). The reseeding treatments also significantly increased the crude protein content (P<0.05). In Xiahe(Gansu),Qilian(Qinghai),and Yulin(Shaanxi),the crude protein content under the HW treatment was higher than the ZW treatment. The relative feeding value of the two reseeding treatments also significantly increased compared with the non-reseeding treatment (P<0.05). These results showed that reseeding leguminous and gramineous forages hold potential for simultaneously improving the productivity and nutritional quality of grassland vegetation of degraded grassland in Northern China.

Key words: No-tillage reseeding, Alfalfa, Bromus inermis Leyss, Elymus nutans Griseb, Biomass, Nutritional quality

摘要： 免耕补播是恢复退化草地生产力的重要措施之一，为探究在北方退化草地上补播豆科和禾本科牧草对草地生产力和营养品质的影响，本试验在四川若尔盖、甘肃夏河、青海祁连、陕西榆林设置不补播（CK）、补播紫花苜蓿（Medicago sativa L）与无芒雀麦（Bromus inermis Leyss）或垂穗披碱草（Elymus nutans Griseb）（ZW），以及黄花苜蓿（Medicago falcata L）与无芒雀麦或垂穗披碱草（HW）3个处理。试验结果表明补播豆科与禾本科牧草后豆科与禾本科优良牧草比例与地上总生物量显著增加（P<0.05）；牧草粗蛋白含量也显著提升（P<0.05），在甘肃夏河、青海祁连、陕西榆林试点HW处理下粗蛋白含量较ZW处理高；两种补播处理后牧草的相对饲喂价值与未补播处理相比也显著增加（P<0.05）。结果表明在四个试验点补播豆科与禾本科牧草均改善了草地植被群落的组成与生产力以及营养品质。

关键词: 免耕补播, 苜蓿, 无芒雀麦, 垂穗披碱草, 生物量, 营养品质

CLC Number:

S963.22+3.3

YUE Li-nan, SHI Shang-li, QI Juan, YANG Pei-zhi, LIU Gang, LIU Wen-hui, ZHANG Ying-jun, JING Jing-ying. Effects of No-tillage Reseeding on Productivity and Nutritional Quality of Degraded Grassland in Northern China[J]. Acta Agrestia Sinica, 2021, 29(11): 2583-2590.

岳丽楠, 师尚礼, 祁娟, 杨培志, 刘刚, 刘文辉, 张英俊, 荆晶莹. 免耕补播对北方退化草地生产力及营养品质的影响[J]. 草地学报, 2021, 29(11): 2583-2590.

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Effects of No-tillage Reseeding on Productivity and Nutritional Quality of Degraded Grassland in Northern China

免耕补播对北方退化草地生产力及营养品质的影响

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