Results 31 to 40 of about 14,470 (183)
保水剂和微生物菌肥配施对旱作燕麦土壤微生物生物量碳、氮含量及酶活性的影响
Shuitu Baochi Xuebao, 2020 为探讨保水剂和微生物菌肥配施后旱作燕麦土壤微生物生物量碳、氮含量及酶活性的影响，在内蒙古黄土高原旱作农田设置不施用保水剂和微生物菌肥（CK）、保水剂和微生物菌肥配施（A）、单施微生物菌肥（B）和单施保水剂（C）4个处理，分析燕麦全生育期内0—10，10—20，20—40 cm土壤微生物生物量碳、氮含量及酶活性时空动态变化和产量变化。结果表明：（1）全生育期，土壤微生物量碳含量呈"双峰"曲线变化，峰值均出现在孕穗期和灌浆期；氮含量呈先降低后升高再降低趋势，苗期含量最高；过氧化氢酶、蔗糖酶、脲酶活性均呈 ...
田露 +6 more
doaj
Study on microbial community and bioavailability of heavy metals during bioturbation in mangrove sediment [PDF]
, 2017 红树林湿地位于陆海交错带，为陆源重金属污染物进入海洋的重要缓冲带。在中国红树林生态系统中，红树植物根系扰动，互花米草入侵以及底栖蟹类扰动是红树林生态系统典型的生物扰动行为，对红树林湿地重金属迁移转化及生物有效性产生深刻的影响。本研究选取入侵植物互花米草、底栖动物蟹类和三种红树植物（白骨壤、秋茄、桐花树）为研究对象，以土壤-植物根系-微生物-土壤动物相互作用的关键区域--植物根际区域和蟹类生存繁殖的场所--蟹类洞为切入点，以红树林湿地典型重金属Cd，Cu，Pb为目标重金属 ...
曾钦辉
core
Advances in microbial-mediated numerical modeling of biogeochemical processes in groundwater [PDF]
Groundwater contamination is a global environmental issue that seriously threatens human health and ecological environment. As an essential component of groundwater ecosystems, microorganisms are involved in a series of biogeochemical processes through ...
Heng DAI +5 more
core +1 more source
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
New Phytologist, EarlyView.Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
Shuitu Baochi Xuebao, 2008 研究了干旱区绿洲种植年限不同的3种苜蓿地0-10 cm,10-20 cm土层土壤微生物量碳、微生物量氮、微生物量商、呼吸强度和代谢商的变化特征。结果表明:在耕层0-20 cm范围内,苜蓿种植年限的长短对土壤微生物量碳、土壤微生物量氮含量有影响,相对来说微生物量碳、氮在四年生苜蓿地的含量最高,其次是一年生苜蓿地的。不同种植年限苜蓿地之间土壤微生物量商(qMB)、呼吸强度、代谢商(qCO2)差异显著,相对来说种植年限相差越大,差异越大。相关分析结果表明,土壤理化特性对土壤微生物活性有影响,其中土壤微生物量碳、
YANG, JIANG, ZHAI, YANG, JIANG
doaj
Zhejiang Daxue xuebao. Lixue ban, 2019 在大田条件下，研究了重茬净、微生物菌剂、锦能菌宝、自制活性生物肥料4 种不同微生物肥料对西红花产量、代谢物和根际微生物生态的影响。结果表明，与对照组相比，施用微生物肥料后，根际土壤中好酸性的细菌呈减少趋势，而嗜中性或碱性的细菌呈增加趋势，4 种微生物肥料均能提高西红花有效球比例，表明增施微生物肥料具有缓解西红花连作障碍的功效。同时，增施重茬净、微生物菌剂、锦能菌宝和自制活性生物肥料分别引起2，3，3 和13 种代谢物含量上调和2，3，2 和4 种代谢物含量下调。
RAOJunfeng(饶君凤) +2 more
doaj +1 more source
Fingerprint analysis on methyl fatty acid and its applications in microbial study [PDF]
, 2007 脂肪酸甲酯谱图分析方法(Fatty Acid Methyl Ester,FAME)是鉴于脂肪酸可作为生物标记物而发展起来的分析技术。本文介绍了FAME谱图分析方法及其在微生物学领域的应用,包括在微生物检测、鉴定和微生物多样性研究中的应用。Fatty acid is an important biomarker.Its application in biology research has become increasingly popular.The method of FAME fingerprint
刘波 +7 more
core
Contribution of microcosm experiments to conservation science
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Microcosms, or miniature experimental systems, have been used to develop models and theories in ecology. However, their contribution to conservation science is unclear. We explored the application, design, and impact of microcosms in conservation science from 469 systematically identified articles published from 1986 to 2023.
Eleanor R. Stern +3 more
wiley +1 more source
Shuitu Baochi Xuebao, 2002 对经过 10年半旱式免耕定位试验的水稻土主要微生物类群数量和微生物生物量的变化进行对比研究 ,结果表明 :实行半旱式厢作及垄作免耕法能够迅速地提高土壤有机质、全氮、全磷和速效氮、磷的水平 ;微生物数量和微生物生物量变化一般存在季节性规律 :春季高 ,夏季至夏末降低 ;各处理土体上层和下层 (0～ 7.5 cm,7.5～15 cm)的基本肥力特征及微生物特征无明显区别 ;免耕处理土壤 ,其微生物的季节性变幅较小 ,垄上或厢上土壤微生物生物量甚至表现反季节性 ,整个生长季节内稳中有升 ...
张磊 肖剑英 等
doaj +2 more sources
Veterinary Dermatology, Volume 37, Issue 1, Page 148-160, February 2026.Background: The antibacterial efficacy of chlorhexidine shampoo is directly affected by formulation and bathing factors. Hypothesis/Objective: To evaluate the in vitro antibacterial efficacy of chlorhexidine‐containing shampoos at various dilutions and to compare their lathering ability.
Emily E. Binversie +2 more
wiley +1 more source