Results 61 to 70 of about 15,024 (166)

黄绵土长期施肥后效及对土壤水分的影响

open access: yesShuitu Baochi Xuebao, 1994
在6年长期施用N,P,M,NP,MN,MP和MNP的土壤上,连续种植一季谷子和两季小麦,研究长期施肥对后茬作物产量和吸N,P量的反映及N,P养分在作物体内分布情况。盆栽试验结果表明,磷肥,有机肥单施或与其它肥料配施均有后效,纯施N肥没有后效,而且影响和限制了后茬作物的生长和发育,P肥的后效最多能维持3年,有机肥后效公能维持一年。经过三料作物吸收,其土壤有机质,全N,速效P和碱解N均有所降低。
郑剑英 赵更生
doaj   +2 more sources

不同有机物料对原生盐碱地水稳性团聚体特征的影响

open access: yesShuitu Baochi Xuebao, 2017
为了研究不同种类和形态有机物料对原生盐碱地水稳性团聚体特征以及物理性质的影响,以吉林西部地区原生盐碱地为研究对象,通过大田试验,分析了颗粒玉米秸秆、正常玉米秸秆、牧草以及羊粪等有机物料对原生盐碱地的浸水容重、沉降系数、田间持水量和蒸发速率等物理指标的影响,及其对土壤水稳性大团聚体和微团聚体的数量、形态、平均质量直径(MWD)、破坏率(PAD)、水稳系数、平均质量比表面积和分形维数等指标的影响。结果表明:(1)各处理中水稳性团聚体组成以微团聚体占主要成分,其中以0.05~0.25 mm粒径为主 ...
何瑞成, 吴景贵, 李建明
doaj  

ABCA12 Frameshift Deletion in Domestic Cats With Ichthyosis Fetalis

open access: yesVeterinary Dermatology, EarlyView.
ABSTRACT Background Ichthyosis fetalis (IF), also known as harlequin ichthyosis, is a rare and often fatal autosomal recessive congenital skin disorder. It is characterized by thickened, hard skin plaques and deep skin fissures that limit mobility and cause malformations of the eyes, lips and ears.
Jeanna M. Blake   +2 more
wiley   +1 more source

不同有机物料对黑土腐殖质元素组成的影响

open access: yesShuitu Baochi Xuebao, 2011
采用盆栽试验,研究施用动物粪便、动物残体、草本残体、木本残体5年后对黑土胡敏酸(HA)、富里酸(FA)和胡敏素(HM)元素组成的影响。结果表明:与CK相比,有机物料施用5年后,黑土HA的C、H含量均显著降低,而缩合度及含氮基团数量提高,并以木本残体作用最显著。除动物粪便处理HA的N含量与CK的大致相同外,其余有机处理N含量均显著提高,各处理HA的O含量由大到小依次为木本残体>草本残体>动物粪便>CK>动物残体,且各处理差异显著。有机物料的施用可以降低FA的缩合度,并以草本残体作用最显著 ...
李建明, 吴景贵
doaj  

Effects of organized guarding on mortality from human–elephant conflict in northeast India

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Human–elephant conflict (HEC) frequently results in human and elephant mortality, posing major social justice and conservation concerns across Asia and Africa. Although a variety of interventions have been introduced to mitigate HEC, rigorous evaluations of how they affect mortality are practically nonexistent.
Nitin Sekar   +6 more
wiley   +1 more source

Incidence Rate of Otitis Externa Episodes in Atopic Dogs Is Reduced by a Therapeutic Diet in a 6‐Month Randomised, Blinded, Controlled, Clinical Trial

open access: yesVeterinary Dermatology, Volume 37, Issue 1, Page 89-102, February 2026.
ABSTRACT Background Recurrent otitis externa (OE) episodes commonly affect dogs with canine atopic dermatitis (cAD) despite ongoing cAD treatment. Objective To determine if a therapeutic diet with active ingredients targeting the skin barrier and allergy pathways reduces the incidence rate of OE.
Adrian Watson   +5 more
wiley   +1 more source

曹娥江干流水质有机污染时空变异分析和可生化性研究

open access: yesShuitu Baochi Xuebao, 2006
根据2003-2005年曹娥江干流的水质监测资料,对水体中有机物污染进行综合评价,并进行时空变异分析,在此监测阶段,有机物的污染趋于缓解,但仍然属于中度污染。对各断面进行有机物污染综合评价指数的相关性分析和可生化度评价,表明上游水质改善将对下游水质的提高有直接影响;上游2#点有机物污染最为严重;整个干流在1月份有机物污染强度最大,有机物的排放量和流域的水文气象条件是其时空变化的主要因素;下游6#点受工业废水影响较大,水体的生物降解能力相对较低。
史一鸣, 吕军, SHI Yi-ming, Lü Jun
doaj   +2 more sources

有机物料添加对内蒙古河套灌区碱化土壤可溶性有机碳的影响

open access: yesShuitu Baochi Xuebao, 2020
通过研究不同有机物料添加对内蒙古河套灌区碱化土壤可溶性有机碳含量变化的影响,寻找合理高效的增碳方式,降低碱化土壤有机碳损失。以内蒙古河套灌区轻度、中度盐碱土为对象进行田间试验,设置生物炭(BC)添加、羊粪(GM)添加,对照(CK)3个处理,对比和分析不同有机物料添加后土壤有机碳(SOC)、可溶性有机碳(DOC)、土壤理化性质的变化。结果表明:(1)与CK相比,轻度碱化土壤BC、GM处理土壤DOC含量分别增加3.28%,20.66%,SOC含量增加5.40%,10.30 ...
陈晨   +6 more
doaj  

Effect of a Spray Containing Occlusive Agents, Humectants and Physiological Lipids on Skin Hydration of Healthy Dogs When Applied After Bathing With a Chlorhexidine 2%/Miconazole 2% Shampoo

open access: yesVeterinary Dermatology, Volume 37, Issue 1, Page 140-147, February 2026.
Background: Normal hydration of the canine epidermis is imperative for cutaneous homeostasis. Xerosis may be encountered in canine atopic dermatitis and may be aggravated by topical antiseptics. Hypothesis and Objectives: To evaluate the hydrating properties and the safety of a spray (Sensiderm spray; MP Labo) when applied after shampooing healthy dogs
Adamantia Pseftogka   +3 more
wiley   +1 more source

黄白土的持水特笥及施用有机物料的效应研究

open access: yesShuitu Baochi Xuebao, 2002
用张力计法测量了黄白土的持水特性及施用有机物料对黄保水和供水性能的影响。结果表明:(1)在张力计测定范围内,黄白土土壤水吸力与含水量之间表现出显著的线性相关。(2)施用有机物料,可以提高土壤的保水性能。其中施用牛粪的效果要优于麦秸。施用有机物料,还可以提高土壤速效水的上限,降低速效水的下限,提高速效水的含量,增强土壤水的有效性。
汪建飞 李粉茹 等
doaj  

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