Results 11 to 20 of about 158,526 (144)

The effect of a mixed cannabidiol and cannabidiolic acid based oil on client‐owned dogs with atopic dermatitis

open access: yesVeterinary Dermatology, Volume 33, Issue 4, Page 329-e77, August 2022., 2022
Background– Cannabidiol (CBD) and cannabidiolic acid (CBDA) are reported to have antinociceptive, immunomodulatory and anti‐inflammatory actions. Objectives – To determine if CBD/CBDA is an effective therapy for canine atopic dermatitis (cAD). Conclusions and clinical relevance – Cannabidiol/CBDA as an adjunct therapy decreased pruritus, and not skin ...
Melissa Loewinger   +4 more
wiley   +1 more source

氮添加对巴音布鲁克高寒湿地土壤无机磷形态的影响

open access: yesShuitu Baochi Xuebao, 2022
为探究在全球气候变化敏感区的干旱区高寒湿地上,氮添加对土壤无机磷形态的影响。在保护良好的巴音布鲁克高寒湿地沼泽(S)、沼泽草甸(SM)和草甸(M)布设野外原位试验,依据巴音布鲁克草原氮沉降量,设置0(CK),8(N1),16(N2) kg·N/(hm2·a)的施氮量,研究短期氮添加对高寒湿地土壤无机磷形态的影响。结果表明:(1)高寒湿地土壤全磷含量平均为1.09 g/kg,总无机磷平均为492.71 mg/kg,而总无机磷平均占全磷的45.67%。(2)3种湿地类型土壤无机磷主要以Ca—P形态存在 ...
胡洋   +7 more
doaj   +2 more sources

生草覆盖下有机无机肥配施对苹果园土壤磷形态分布的影响

open access: yesShuitu Baochi Xuebao, 2023
依托13年长期定位试验采取裂区设计,主处理为行间生草覆盖和清耕,副处理为4个施肥处理,具体为不施肥(CK)、单施有机肥(M)、氮磷钾配施(NPK)、有机无机肥配施(MNPK),采用修正的Hedley磷分级方法浸提和测定各磷形态。结果表明:石灰性土壤0—20,20—40 cm土层各形态磷含量以盐酸态磷(D.HCl—P)和残留态磷(Residual—P)为主,水溶性磷(H2O—P)与碳酸氢钠无机磷(NaHCO3—Pi)比例较低。经过13年生草覆盖和不同施肥处理 ...
孔旭   +8 more
doaj  

青藏高原不同类型草地土壤磷素分布及其影响因素

open access: yesShuitu Baochi Xuebao, 2022
磷是限制草地生态系统生产力的关键性养分元素,阐明青藏高原草地土壤磷素分布特征及其影响因素对于维持该区域草地生态系统的可持续发展具有重要意义。沿青藏高原从西北至东南的水平样带采集不同类型草地(即草甸草原、典型草原和荒漠草原)的土壤样品,研究土壤全磷、有效磷、无机磷组分和有机磷组分的分布特征及其影响因素。结果表明:土壤全磷和有效磷含量以草甸草原最高,其次为荒漠草原和典型草原。各类型草地土壤的无机磷组成均以酸溶态无机磷为主;草甸草原土壤的有机磷组成以氢氧化钠态有机磷为主 ...
关鑫鑫   +7 more
doaj  

长期定位施肥对无石灰性潮土磷素状况的影响

open access: yesShuitu Baochi Xuebao, 2005
基于无石灰性潮土长期定位试验,研究长期施肥对土壤磷素状况的影响的结果表明,在无石灰性潮土上长期单施有机肥、有机—无机肥配施、氮磷钾配施能提高土壤Ca-P,Fe-P,Al-P的含量,降低O-P的含量。单施氮肥能提高土壤O-P、降低Ca-P含量。单施有机肥及其配施无机化肥比单施无机化肥有机磷增加了15.60%~11.21%,无机磷减少了11.21%~15.60%。土壤有效磷与Fe-P无相关性,与土壤全磷、无机磷、有机磷呈极显著正相关,与Ca-P,Al-P呈显著正相关,与O-P呈极显著负相关。对有效磷贡献 ...
刘树堂 韩晓日 迟睿 隋方功 姚源喜
doaj   +2 more sources

不同种植年限苹果园土壤磷状况和无机磷组分特征

open access: yesShuitu Baochi Xuebao, 2020
通过采集胶东地区不同年限苹果园0—100 cm土层土壤,分析了不同种植年限苹果园土壤全磷、有效磷、无机磷含量和无机磷组分特征,以期为苹果园科学施用磷肥提供依据。结果表明:胶东地区苹果园0—40 cm土层土壤全磷、无机磷、有效磷平均含量为0.76 g/kg,681.10 mg/kg,73.05 mg/kg。种植年限显著影响了苹果园土壤磷含量,随着种植年限的增加耕层土壤全磷、有效磷和无机磷含量呈上升趋势。不同种植年限的苹果园土壤全磷、有效磷及各无机磷组分均随着土层的加深整体呈递减趋势。无机磷组分主要以Al ...
贾志航   +5 more
doaj  

Land use overrides climatic controls on soil organic nitrogen transformations: Contrasting responsiveness between forest and cropland ecosystems

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang   +10 more
wiley   +1 more source

Developmental plasticity drives converge nt shifts in phosphorus acquisition strategies towards root phosphatase activity in Moso bamboo under nitrogen addition

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Anthropogenic nitrogen (N) deposition is a major driver of global change. However, its effects on the developmental plasticity of plant nutrient strategies remain poorly understood.
Quan Li   +11 more
wiley   +1 more source

Strategies in Ericaceae to acquire phosphorus in phosphorus‐impoverished habitats in the southwest Australian biodiversity hotspot

open access: yesFunctional Ecology, Volume 39, Issue 10, Page 2889-2904, October 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In the Southwest Australian Biodiversity Hotspot, the greatest plant species diversity tends to occur on the most phosphorus (P)‐impoverished soils. Many plant species in this P‐impoverished environment release root carboxylates that mobilise soil P which is a more ...
Xue Meng Zhou   +5 more
wiley   +1 more source

洱海流域高肥力土壤的碳磷比特征及调控途径

open access: yesShuitu Baochi Xuebao, 2023
为提高高肥力土壤磷素安全可持续利用,探究高肥力土壤碳磷比特征。选取洱海流域3种典型作物类型(粮食作物-玉米、地方特色高值经济作物-烤烟和高值高投入作物-蔬菜)作为研究对象,采集27个样点土壤,测定土壤碳磷含量并计算碳磷比。结果表明:(1)土壤有机碳(SOC)含量为31.91 g/kg,种植不同作物类型土壤SOC含量无显著差异;(2)土壤有效态无机磷(NaHCO3提取态无机磷,简称NaHCO3-Pi)含量为156.7 mg/kg,有效态有机磷(NaHCO3提取态有机磷,简称NaHCO3-Po)含量为63 ...
李丹丹, 彭懿, 冯固, 张林
doaj  

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