Screening of Suitable Sowing Amount of Four Ecological Grass Species in Muli Mining Area

doi:10.11733/j.issn.1007-0435.2026.02.034

Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (2): 723-733.DOI: 10.11733/j.issn.1007-0435.2026.02.034

Screening of Suitable Sowing Amount of Four Ecological Grass Species in Muli Mining Area

Lü Liang-yu^1,2,3, FU Shou-quan^2,3, LIU Qing-qing^1,2, HE Miao-hua¹, CAI Zong-cheng^1,2, SHI Jian-jun^1,2,3

1. Academy of Animal science and Veterinary, Qinghai University, Xining, Qinghai Province 810016, China;
2. State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, Qinghai Province 810016, China;
3. Qinghai Provincial Key Laboratory of Adaptive Management on Alpine Grassland, Xining, Qinghai Province 810016, China

Received:2025-03-07 Revised:2025-03-27 Published:2026-01-22

木里矿区4种生态草种适宜播种量筛选

吕亮雨^1,2,3, 付守全^2,3, 刘青青^1,2, 赫苗花¹, 蔡宗程^1,2, 施建军^1,2,3

1. 青海大学畜牧兽医科学院, 青海西宁 810016;
2. 青海大学省部共建三江源生态与高原农牧业国家重点实验室, 青海西宁 810016;
3. 青海省高寒草地适应性管理重点实验室, 青海西宁 810016

通讯作者: 施建军，E-mail:378605242@qq.com
作者简介:#吕亮雨（1997-），男，汉族，山东烟台人，博士研究生，主要从事牧草经营管理研究，E-mail:1670240560@qq.com；#付守全（2002-），男，汉族，河南信阳人，硕士研究生，主要从事牧草经营管理研究，E-mail:1521722043@qq.com；
基金资助:
高寒矿区生态修复关键技术与集成资助项目（2021YFC3201605）；青海省科技特派员专项（2025-NK-P25）资助

Abstract

Abstract: This study aims to screen the suitable grass species with low sowing rate and high coverage. Four ecological grass species， Poa pretensis ‘Qinghai’， Deschampsia cespitosa， Koeleria macrantha and Elymus tangutorum， were selected as experimental materials to carry out the screening experiment of suitable sowing rate. The characteristics of plant phenotypic traits， biomass and soil nutrients under three sowing rates were analyzed. The results showed that when the sowing rate was 9 g·m^-2， the aboveground biomass of Poa pretensis ‘Qinghai’， Deschampsia cespitosa and Koeleria macrantha were the highest， which were 296.45 g·m^-2，224.32 g·m^-2 and 236.35 g·m^-2 respectively. The aboveground biomass of Elymus tangutorum was 356.24 g·m^-2 when the seeding rate was 18 g·m^-2， which was significantly higher than other treatments （P<0.05）. When the sowing amount of Poa pretensis ‘Qinghai’， Deschampsia cespitosa and Koeleria macrantha reached 9 g·m^-2， the soil nutrient indexes such as organic matter， total nitrogen and total phosphorus performed well. The seeding rate of Elymus tangutorum was 18 g·m^-2， which showed a good soil nutrient status. Principal component analysis of 13 indexes of plants and soil showed that the cumulative contribution rate of the first five principal components reached 89.615%. The comprehensive evaluation of membership function showed that the comprehensive evaluation values of Poa pretensis‘Qinghai’， Deschampsia cespitosa and Koeleria macrantha were the highest when the sowing amount was 9 g·m^-2， which were 0.420， 0.486 and 0.698 respectively. When the seeding rate of Elymus tangutorum was 18 g·m^-2， the comprehensive evaluation value was the highest， which was 0.634. To sum up， 9 g·m^-2 is the most suitabel sowing amount for planting Poa pretensis‘Qinghai’， Deschampsia cespitosa and Koeleria macrantha in Muli mining area， and 18 g·m^-2 is Elymus tangutorum in Muli mining area.

Key words: Ecological grass species, Sowing quantity, Biomass, Physical and chemical properties of soil, Muli mining area, Eco-restoration

摘要： 本研究以筛选适宜草种、确定低播量并实现高盖度为目标，选取青海草地早熟禾（Poa pretensis‘Qinghai’）、发草（Deschampsia cespitosa）、洽草（Koeleria macrantha）和麦宾草（Elymus tangutorum）4种生态草种为试验材料，开展适宜播量筛选试验。分析3种播量下植物表型性状、生物量和土壤养分变化特征。结果表明：播量为9 g·m^-2时，青海草地早熟禾、发草和洽草地上生物量最高，分别为296.45 g·m^-2，224.32 g·m^-2和236.35 g·m^-2；麦宾草播量为18 g·m^-2时，地上生物量为356.24 g·m^-2，显著高于其他处理（P<0.05）。青海草地早熟禾、发草和洽草的播种量达到9 g·m^-2时，土壤中的有机质、全氮和全磷等养分指标表现良好；而麦宾草播量为18 g·m^-2，显示出较好的土壤养分状况。对植物和土壤的13个指标进行主成分分析，发现前5个主成分累计贡献率达到89.615%，隶属函数综合评价发现青海草地早熟禾、发草和洽草播量为9 g·m^-2时，综合评价值最高，分别为0.420，0.486和0.698；麦宾草播量为18 g·m^-2时，综合评价值最高，为0.634。综上所述，9 g·m^-2是木里矿区建植青海草地早熟禾、发草和洽草人工草地的最佳播量，18 g·m^-2是木里矿区建植麦宾草人工草地的最佳播量。

关键词: 生态草种, 播量, 生物量, 土壤理化性质, 木里矿区, 生态修复

Lü Liang-yu, FU Shou-quan, LIU Qing-qing, HE Miao-hua, CAI Zong-cheng, SHI Jian-jun. Screening of Suitable Sowing Amount of Four Ecological Grass Species in Muli Mining Area[J]. Acta Agrestia Sinica, 2026, 34(2): 723-733.

吕亮雨, 付守全, 刘青青, 赫苗花, 蔡宗程, 施建军. 木里矿区4种生态草种适宜播种量筛选[J]. 草地学报, 2026, 34(2): 723-733.

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Screening of Suitable Sowing Amount of Four Ecological Grass Species in Muli Mining Area

木里矿区4种生态草种适宜播种量筛选

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[3]	WANG Shou-xing, A di-Ha-ze, OU Li-peng, LI Cheng-xian, NING Xiao-chun, WANG Yan-he, WEI Dai-jun, YANG Ming-xin, GU Qiang, ZHANG Zhong-hua, ZHOU Hua-kun. Effects of Artificial Grassland Establishment on Soil-Microbial Stoichiometric Characteristics in the Three-River-Source Region [J]. Acta Agrestia Sinica, 2026, 34(1): 98-106.
[4]	ZHAO Hong-mei, ZHANG Xue-mei, HE Jie-li, SHANG Tian-cui, YUE Shang-wu, YANG Yun-fei. Seed Germination and Seedling Growth of the Invasive Plant Xanthium spinosum under Different Sand Burial Depths [J]. Acta Agrestia Sinica, 2026, 34(1): 182-190.
[5]	ZHANG Lei, ZHANG Yu-juan, SUN Shi-xian, XU Xue-bao, XING Yue, LIU Xiao-li, GAO Cui-ping, WANG Cheng-jie. Effects of Different Grazing Intensities on Soil Organic Carbon Content in Desert Steppe [J]. Acta Agrestia Sinica, 2025, 33(8): 2541-2547.
[6]	DUAN Jun-guang, FANG Kai, PEI Lu, CHU Jian-min, ZHANG Jin-xin, LI Xiao-xia, WANG Ying-xin. Changes of Trade-offs Between Aboveground and Belowground Plant Biomass Across Different Grazing Intensities of Alpine Meadow [J]. Acta Agrestia Sinica, 2025, 33(8): 2575-2584.
[7]	LIU Chang, CHEN Ji-shan, ZHU Rui-fen, SUN Wan-bin, YAO Bo, DONG Shui-kui. Meta-analysis of the Impacts of Nitrogen Addition on Biomass and Soil Organic Carbon Content of China Grasslands [J]. Acta Agrestia Sinica, 2025, 33(7): 2078-2089.
[8]	ZHONG Hua, HAO Jie, LIANG Wen-jun, Gao Yang-yang, LI Lang, WANG Ya-nan, WANG Chang-hui, DONG Kuan-hu. Effects of Various Nitrogen Forms Addition on Grassland Biomass in the Agro-Pastoral Ecotone in Northern Shanxi [J]. Acta Agrestia Sinica, 2025, 33(7): 2198-2205.
[9]	WANG Sheng-ju, LIU Wen-hao, JIN Gui-li, CUI Guo-ying, ZHANG Yong-juan, WEI Xiu-hong, LI Chao, CHEN Meng-tian, LI Wen-xiong, DU Wen-lin. Temporal and Spatial Changes of Grassland Aboveground Biomass and Its Response to Climate Factors in Xinjiang [J]. Acta Agrestia Sinica, 2025, 33(7): 2320-2332.
[10]	YAO Jun-fei, WEI Guo-liang, WU Fa-liang, LI Xu-dong, Adihaze, SHI Zheng-chen, ZHANG Zhong-hua, MA Li, LI Shan, LI Hong-lin, LI Qiang-feng, WANG Zhen, ZHOU Hua-kun, ZHANG Qiang. Effects of Different Grazing Management Practices on the Contents of Soils and Microbiomass and Their Stoichiometric Characteristics in Alpine Grassland [J]. Acta Agrestia Sinica, 2025, 33(6): 1749-1755.
[11]	LI Yan, XU Jing-hang, WU Jian-ping. Effects of Biochar Addition on Plant Biomass in A Degraded Cultivated Grassland in Zhaotong， Yunnan Province [J]. Acta Agrestia Sinica, 2025, 33(6): 1991-2001.
[12]	XU Ai-yun, QIN Yi-tong, ZHANG Yuan-hong, LI Tian, CAO Bing. Effects of Elevated CO₂ Concentration on the Growth of Agropyron mongolicum Under Short-Term Nitrogen Addition Scenario [J]. Acta Agrestia Sinica, 2025, 33(4): 1211-1217.
[13]	LI Wen-xiong, JIN Gui-li, LIU Wen-hao, LI Jia-xin, WANG Sheng-ju, CHEN Meng-tian, LI Chao, DU Wen-lin, Davuletti Khaled Samugal, Serik Eli Yeridana. Research on Aboveground Biomass Inversion of Desert Grassland Based on UAV Remote Sensing [J]. Acta Agrestia Sinica, 2025, 33(4): 1258-1266.
[14]	HAO Jie, NIU Hui-min, WANG Chang-hui, DIAO Hua-jie, WU Shuai-kai, SU Yuan, GAO Yang-yang, LIANG Wen-jun, YANG Xiu-yun, DONG Kuan-hu. Effects of Nutrient Addition and Shallow Plowing on the Biomass of Grasslands in the Agro-pastoral Ecotone of Northern Shanxi [J]. Acta Agrestia Sinica, 2025, 33(4): 1299-1307.
[15]	ALIMIRI-Alimujiang, TANG Bang-jie, KONG Fan-xi, CUI Wen-kai, CHEN Jun. Study on Convenient Estimation Technique of Aboveground Biomass of Natural Grassland in Xinjiang [J]. Acta Agrestia Sinica, 2025, 33(4): 1308-1315.