文献类型：期刊文献

英文题名：Effects of Different Moisture Conditions on Biological Nitrogen Fixation Capacity and Nutritive Value of Alfalfa (Medicago sativa L.) Seedlings

作者：Wang, Yao[1,2,3] He, Chunxia[1,2,3] Meng, Ping[1,2,3] Sun, Shoujia[1,2,3] Gao, Jun[1,2,3] Zhang, Jinsong[1,2,3] Cai, Jinfeng[2]

第一作者：Wang, Yao;王雁

通信作者：He, CX[1];Zhang, JS[1];He, CX[2];Zhang, JS[2];He, CX[3];Zhang, JS[3]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, Natl Forestry & Grassland Adm, Beijing 100091, Peoples R China;[2]Nanjing Forest Univ, Collaborat Innovat Ctr Sustainable Forestry Southe, Nanjing 210037, Jiangsu, Peoples R China;[3]Henan Xiaolangdi Forest Ecosyst Natl Observat & Re, Dept Neurosurg, Jiyuan 454650, Peoples R China

年份：2024

卷号：24

期号：4

起止页码：8235-8247

外文期刊名：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION

收录：;Scopus(收录号：2-s2.0-85208790976);WOS:【SCI-EXPANDED(收录号:WOS:001350893600002)】；

基金：We thank Pan Xue and Jiantuan Fan from Nanshan Forest Farm, Jiyuan City for contributing to the prep work. We thank Qingmei Pan and Meijun Hu for the suggestion. We would like to thank Editage (www.editage.com) for English language editing.

语种：英文

外文关键词：Water; Nitrogenase activity; Nitrogen fixation efficiency; Nutritive value

摘要：This research aimed to assess the impact of various moisture treatments on the nitrogen fixation and nutritive value of alfalfa seedlings. Potted alfalfa plants were served as the experimental material, and four moisture treatments were conducted (30%, 50%, 70%, and 90% of the field water capacity, labeled as W-30%, W-50%, W-70%, and W-90%). Evaluations of growth traits, physiological characteristics, nitrogen fixation capacity, and nutritive value of alfalfa were conducted in response to the different moisture treatments. Growth traits such as biomass of alfalfa were limited in both lower and higher water treatments compared to the W-70% treatment; Nitrogen fixation efficiency of alfalfa in W-70% treatment was increased by 190.19, 22.48 and 40.36% compared to W-30, 50 and 90% treatments, respectively, which was attributed to increased root activity and nitrogenase activity; The response of forage nutrient traits to moisture was similar to that of nitrogen fixation, with alfalfa in W-70% treatment having the highest crude protein and crude ash content and lowest crude fibre content; The ranking order of nutritive value under different moisture treatments was W-70% > W-50% > W-90% > W-30%. Moisture influenced nitrogen fixation by impacting alfalfa root activity and nodule nitrogenase activity. For alfalfa seedlings, a 70% field water capacity not only exhibited the highest nitrogen fixation efficiency but also displayed the superior nutritive value.