Results 11 to 20 of about 761,011 (155)
Zhejiang Daxue xuebao. Lixue ban, 2015 通过温室盆栽试验，研究了在不同培养期内（1，2和4个月），不同磷肥（过磷酸钙、磷酸二氢钾、钙镁磷肥）及施磷量（P2O5 0.2，0.5 g • kg-1）对镉污染茶园土壤pH值、土壤有效态镉含量及茶树镉吸收累积量的影响.结果表明：钙镁磷肥的施加可有效提高茶园土壤的pH值，过磷酸钙和磷酸二氢钾对pH值的提高则不明显；过磷酸钙和钙镁磷肥均提高了 土壤有效态镉含量，且施磷量不同影响规律亦不同，而磷酸二氢钾对土壤有效态镉含量的影响不显著；茶树累积镉含量为根>茎>叶，根系对镉的富集能力极强 ...
LUYYamin(吕亚敏) +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2012 采用氧化铁/醋酸纤维复合膜(FeO/CAM)法研究厦门湖边水库水体和沉积物中生物有效磷浓度的空间分布特征，分析生物有效磷及不同类群微藻叶绿素a质量浓度之间的相关性，初步探讨生物有效磷的来源.结果表明，表层水中生物有效磷质量浓度(FeO-P)低于底层水，且均以颗粒态生物有效磷(FeO-PP)为主.表层水中生物有效磷质量浓度在南部湖湾较高；而底层水中生物有效磷质量浓度则在开阔区域较高；沉积物中生物有效磷在入水口最高.各种生物有效磷与各类群藻叶绿素a质量浓度之间表现不同的相关性.除表层水中FeO ...
ZHAOXiao-yan(赵晓艳) +6 more
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Shuitu Baochi Xuebao, 2022 以青岛市大沽河流域砂壤、河潮土、砂姜土3种农田土壤为研究对象,开展室内土柱试验,研究土壤pH、温度、含水率等理化性质与生物炭和氮肥配施对土壤有效磷(Olsen-P)和全磷(TP)淋失的影响,以期为提高农田土壤磷素有效性、减少全磷淋失提供参考依据。结果表明:3种土壤的pH在偏中性或弱碱性时磷素有效性最高,pH偏酸性时,土壤全磷淋失量较大;3种土壤不同土层中的Olsen-P含量随含水率的增加表现为不同的变化规律;3种土壤的磷素有效性均随温度的升高逐渐增大,全磷淋失量随温度的升高逐渐降低;生物炭和氮肥配施 ...
李利霞 +3 more
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黄河三角洲盐渍化荒地种植植物对土壤改良、磷形态转化及有效性的影响
Shuitu Baochi Xuebao, 2021 为了明确种植不同植物对黄河三角洲盐渍化荒地改良效果、土壤磷形态转化及增效调控机制，研究了在生长芦苇的盐渍化荒地改变种植植物（柽柳、白蜡、苜蓿）的改良措施对土壤磷形态转化及有效含量的影响。结果表明：与荒地芦苇相比，3种植物种植均能显著提高0—20 cm土壤磷酸酶活性，柽柳种植显著降低0—20 cm土壤pH，促进0—20 cm土壤大颗粒团聚体形成，提高0—40 cm土壤有机碳含量，显著增加0—100 cm土壤盐渍化程度，促使土壤速效磷（Ca2—P）和缓效磷（Ca8—P和Al—P）向难溶性磷（Ca10—P ...
刘盛林 +5 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The electrocatalytic co‐reduction of CO2 and nitrate (NO3− ${\text{NO}}_{3}^{-}$) to synthesize urea presents a sustainable alternative to traditional industrial processes, yet its efficiency is fundamentally limited by the kinetically mismatched activation and coupling of CO2 and NO3− ${\text{NO}}_{3}^{-}$.
Jiayu Liu +9 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Infected bone defects represent a dual therapeutic challenge demanding concurrent infection inhibition and osteogenesis promotion. Systemic antibiotic administration is taken as a classical treatment protocol but often yields inadequate local antibiotic concentrations and delayed bone repair.
Xucai Wang +8 more
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Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, Volume 40, Issue 8, Page 2548-2559, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
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Functional Ecology, Volume 40, Issue 8, Page 2590-2601, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu +9 more
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Journal of Ecology, Volume 114, Issue 8, August 2026.Ectomycorrhizal roots of Pinus armandii release more carboxylates than non‐mycorrhizal root segments, mobilizing Al‐bound inorganic P. Under the lowest available P conditions, they also secrete more phosphatase, promoting the mineralization of Al‐bound organic P.
Jun Zhou +7 more
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Shuitu Baochi Xuebao, 2011 通过田间试验与室内分析相结合的方法研究长期不同施肥处理下土壤颗粒组成及其有效磷富集。结果表明,各施肥处理土壤颗粒组成都呈现颗粒愈小比例愈高的规律,而不同施肥处理对同一粒径颗粒含量又有一定的影响。在单施磷肥(P)的基础上,配施氮肥、有机肥(NP、PM、NPM ...
陈璐, 党廷辉, 杨绍琼, 戚瑞生
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