Results 31 to 40 of about 6,169 (193)
Multiple global change factors alter the scaling of nitrogen to phosphorus in alpine plants
Functional Ecology, Volume 39, Issue 8, Page 2044-2055, August 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometry and allometry of nitrogen (N) and phosphorus (P) reflect nutrient absorption and dynamic allocation by plants, and can be regulated by global change factors (e.g. nitrogen enrichment, climate warming and altered precipitation). Yet, how multiple global
Jiapu Li +10 more
wiley +1 more source
‘How Does Living in Institution Impact Young Lives?’—Insights From Young People in Ci'aiyuan
Children &Society, Volume 39, Issue 4, Page 760-769, July 2025.ABSTRACT Institutional care often carries a negative reputation due to its perceived adverse effects on children and young people. However, it remains a significant form of alternative care in China. In Xiangxi, childcare institutions, known as ci'aiyuan, have been further expanding by involving wider populations in recent years.
Shian Yin
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Tannins and nutrients dynamics of alien mangrove species Sonneratia apetala [PDF]
, 2008 单宁是植物体内重要的次生代谢物质，对植物的抗逆性具有重要作用。而氮磷是限制植物初级生产力的重要营养元素。无瓣海桑（Sonneratiaapetala）作为红树植物外来种，引种到我国后得到大面积种植。本文以广东湛江高桥无瓣海桑林为研究对象，分析了不同组分的单宁含量及其叶片单宁的季节动态，利用MALDI-TOFMS对成熟叶片纯化单宁的化学结构进行分析，并探讨了无瓣海桑叶片氮、磷含量的季节动态以及单宁和氮之间的相关性。研究结果表明： 1.无瓣海桑不同组分（叶片、树皮、根、果）总酚含量在127.73±3.80 ...
张慧
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Assessing Closed Hydroponic Subsystems for Batavia Lettuce Growth Under Different Planting Densities
World Water Policy, Volume 11, Issue 2, Page 427-438, May 2025.ABSTRACT Hydroponic systems have the potential to be sustainable and alternative methods for food production that confer advantages of high production and better control of growth. However, only a few studies have focused on leafy vegetable growth in different subsystems and environmental variables.
Demet Çekin +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2008 采用田间试验的方法,在供试玉米产量15 435 kg/hm2的超高产水平下,对春玉米氮、磷、钾吸收、分配与转移规律进行了系统研究。结果表明:在灌浆期前,超高产春玉米对氮、磷、钾养分吸收规律变化较为相似,即阶段吸收量和日均吸收量随生育时期的推进逐渐增大;而灌浆期后,植株对氮、磷、钾养分吸收趋势出现显著差异,即氮、磷吸收持续增高,钾吸收迅速下降。养分在各器官体内的分配特点体现在氮、磷分配随生长中心的转移而发生变化,而钾向生长中心的转移变化不明显。
曹国军 +5 more
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Allelopathy and nutrient conservation strategies of invasive plant Lantana camara [PDF]
, 2012 马缨丹（Lantanacamara）为马鞭草科半常绿灌木，原产南美亚马逊河流域。马缨丹于1645年作为一种观赏花卉由荷兰引入台湾，后逸为野生，现广布于我国的广东、广西、海南、云南、福建、台湾、香港和澳门等省区。由于马缨丹具有极强的适应能力和繁殖能力，它已被列为世界10种最有害的杂草之一。本研究以厦门大学后山的马缨丹为研究对象，研究了不同浓度马缨丹叶片及根系水浸液对4种农作物绿豆（Vignaradiata）、油菜（Brassicacampestris）、小麦（Triticumaestivum）和水稻 ...
卢向荣
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Effects of Biostimulants on the Growth of Wax Gourd Seedlings [PDF]
【Objective】The study aims to identify biostimulants conducive to the cultivation of robust wax gourd seedlings and to determine the optimal concentration for their application.【Method】The black wax gourd 'Tiezhu 2' was used as experimental material, the ...
Baige ZHANG +8 more
core +1 more source
Functional Ecology, Volume 39, Issue 5, Page 1274-1287, May 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Interactions between plants and soil microorganisms in the rhizosphere are vital for maintaining the nutrient cycle and stability of terrestrial ecosystems. Nitrogen, closely related to carbon (C) cycling and ecosystem productivity, undergoes transformation by soil ...
Ru Wang +9 more
wiley +1 more source
Shuitu Baochi Xuebao, 2002 研究结果表明 :13年生刺槐林的总生物量为 2 4 16 5 .4 8kg/hm2 ;刺槐林 5种养分元素贮存量为 4 39.76 8kg/hm2 ,各器官中不同养分元素的含量差异较大 ,不同器官中 5种养分元素贮存量大小排序结果是树干 >叶 >枝 >根。若以各养分元素的贮存量来计 ,N的贮存量为 16 4 .92 2 kg/hm2 ,P的贮存量为 9.371kg/hm2 ,K的贮存量为 31.814 kg/hm2 ,Ca的贮存量为 2 2 5 .35 3kg/hm2 ,Mg的贮存量为 17.5 76 ...
刘世海 余新晓 等
doaj
STUDIES ON THE NUTRIENT RETRANSLOCATION EFFICIENCIES DURING LEAF SENESCENCE [PDF]
, 1999 国家自然科学基金!资助课题(No ...
林鹏, 王文卿
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