Results 31 to 40 of about 10,389 (162)

不同类型保水剂性能及其对玉米生长效应的比较

open access: yesShuitu Baochi Xuebao, 2007
为了比较各类保水剂在同等条件下的性能和应用效果差异,促进保水剂在抗旱节水中的合理应用。本文对国内聚丙烯酸钠、淀粉接枝丙烯酸钠、凹凸棒(无机)/聚丙烯酸钠(有机)、腐殖酸/聚丙烯酸钾4种主要类型农用保水剂进行性能测定,比较其吸水倍率、吸水速率、抗离子特性、pH值、反复吸水性等性能的差异。结果表明,不同类型保水剂的性能差异较大,单一性保水剂聚丙烯酸盐在吸水倍率、吸水速率和保水性等方面表现最好,但反复吸水时吸水率降低较快;淀粉接枝丙烯酸钠第7次吸水时已丧失吸水性;复合型保水剂凹凸棒/聚丙烯酸钠、腐殖酸 ...
黄占斌   +4 more
doaj  

Plant functional trait dissimilarity drives plant mixture effects on fine root biomass and trait variations

open access: yesNew Phytologist, Volume 249, Issue 2, Page 764-776, January 2026.
Summary Fine roots are critical for soil resource uptake, yet how declining plant diversity alters fine root biomass (RB) and traits remains unclear. We tested how plant functional trait dissimilarity in shade tolerance, drought tolerance, growth rate, and nitrogen‐fixation ability drives variation in root attributes.
Sai Peng, Yakun Zhang, Han Y. H. Chen
wiley   +1 more source

古尔班通古特沙漠南缘丘间地土壤水分特征曲线及模拟

open access: yesShuitu Baochi Xuebao, 2017
为研究干旱荒漠地区土壤水分特征的变化规律并探讨土壤水分特征曲线拟合模型的适宜性,以古尔班通古特沙漠南缘丘间地为研究对象,应用压力膜仪测定了丘间地剖面各土层(0—150 cm)的土壤水分特征曲线,结合土壤容重、颗粒分布及饱和含水率等性质,分析了丘间地不同土层水分特征和孔隙大小的分布状况,明确了Gardner模型和van Genuchten模型拟合的适用性。结果表明:(1)丘间地剖面砂质土壤释水量伴随吸力呈规律性变化,低吸力段(0~100 kPa)各土层水分特征曲线走势陡直,释水性强;中高吸力段(100~1
董义阳, 赵成义, 班春广
doaj  

豆類の吸水特性 [PDF]

open access: yes, 2001
Characteristics of water absorption of soybean, azuki bean and kidney beans (cv. Toramame and Taishokintoki) were investigated. The way of water absorption of soybean was different from that of other beans, because soybeans absorbed water from whole ...
Isao Toyosawa   +5 more
core   +1 more source

Exploring the importance of aromatic plants' extrafloral volatiles for pollinator attraction

open access: yesNew Phytologist, Volume 248, Issue 2, Page 517-528, October 2025.
Summary Aromatic plants occur in many plant lineages and have widespread ethnobiological significance. Yet, the ecological significance and evolutionary origins of aromatic volatile emissions remain uncertain. Aromatic emissions have been implicated in defensive interactions but may also have other important functions.
Aphrodite Kantsa   +3 more
wiley   +1 more source

过敏性紫癜患者血清中过敏原特异性IgE和总IgE水平及临床意义

open access: yesZhongguo shiyan zhenduanxue, 2021
目的 分析过敏性紫癜(HSP)患者血清中过敏原特异性IgE和总IgE水平及临床意义。方法 选取2017年01月-2020年01月江油市人民医院收治的95例HSP患者为研究对象,采用酶联免疫吸附法检测血清过敏原特异性IgE抗体和血清总IgE水平。结果 HSP患者血清总IgE>100IU/mL者88例,阳性率为92.63%,其中一种过敏原特异性IgE抗体阳性21例(22.11%),两种及两种以上过敏原特异性IgE抗体阳性74例(77.89%)。HSP患者食入性过敏原中以鱼、牛奶及虾/蟹/扇贝阳性率最高 ...
孙培静, 刘海霞, 张心梅
doaj  

立毛稲の水分変動および籾の吸水特性 [PDF]

open access: yes, 1974
論文(Article)journal ...
上出, 順一, 蓼内, 常雄
core  

Differences between men and women accessing an Australian perinatal and infant mental health care navigation service—Why do fathers seek help?

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 46, Issue 5, Page 506-516, September 2025.
Abstract This study explored the demographic and psychosocial characteristics, and presenting concerns of new or expectant fathers seeking perinatal mental health (PMH) support through the Australia‐based ForWhen service, compared to a sample of mothers.
Sophia A. Harris   +2 more
wiley   +1 more source

Altered nutrient cycling functionality in seagrass meadows under a simulated future marine heatwave event

open access: yesNew Phytologist, Volume 247, Issue 6, Page 2616-2629, September 2025.
Summary Seagrasses are important contributors to environmental nutrient cycling in marine ecosystems and can improve water quality by absorbing excess nitrogen (N). However, these ecosystems are vulnerable to human‐mediated pressures, including marine heatwaves (MHWs), particularly those of longer duration. We performed an experiment simulating a 30‐d,
Alissa V. Bass   +5 more
wiley   +1 more source

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