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根区施用杂卤石对昆明烤烟产质量及养分吸收的影响 被引量:9
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作者 王一柳 李冬雪 +6 位作者 卢殿君 徐兴阳 陈小琴 赵正雄 王火焰 范晓辉 Robert Meakin 《中国土壤与肥料》 CAS CSCD 北大核心 2021年第3期199-206,共8页
杂卤石[K_(2)MgCa_(2)(SO_(4))_(4)·2H_(2)O]是近几年推广较快的一种肥料资源,富含钾、钙、镁和硫等元素,其在农业上具有较广泛的应用前景。对根区施用杂卤石部分替代硫酸钾在昆明烤烟上的施用效果进行研究,结果表明,在晋宁、宜良... 杂卤石[K_(2)MgCa_(2)(SO_(4))_(4)·2H_(2)O]是近几年推广较快的一种肥料资源,富含钾、钙、镁和硫等元素,其在农业上具有较广泛的应用前景。对根区施用杂卤石部分替代硫酸钾在昆明烤烟上的施用效果进行研究,结果表明,在晋宁、宜良和寻甸3个试验点,与等钾肥用量的农民常规施肥相比,施用杂卤石提高了烤烟产量,幅度为2.32%~9.64%,总产值增加了3.07%~13.6%,经济效益增加了3.22%~10.4%。3个试验点杂卤石根区基施的效果较为稳定,根区追施杂卤石的效果仅在晋宁试验点超过了基施,而在宜良和寻甸均不及基施。合理施用杂卤石较常规施肥提高了烟叶钾、钙和镁含量,提高幅度分别为9.53%~26.2%、13.4%~25.2%和25%~104%。总体而言,在昆明土壤有效钙和镁都不高的烟田,杂卤石是一个比较好的可促进烟叶钾钙镁协调供应的肥料,根区适量施用杂卤石可同时提高烟叶钾钙镁的含量,并促进烟叶产量和质量的提升。 展开更多
关键词 杂卤石 根区施肥 养分吸收 钾肥 烟叶
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Composite armor philosophy(CAP):Holistic design methodology of multi-layered composite protection systems for armored vehicles
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作者 Evangelos Ch.Tsirogiannis Foivos Psarommatis +1 位作者 Alexandros Prospathopoulos Georgios Savaidis 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第11期181-197,共17页
A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented i... A philosophy for the design of novel,lightweight,multi-layered armor,referred to as Composite Armor Philosophy(CAP),which can adapt to the passive protection of light-,medium-,and heavy-armored vehicles,is presented in this study.CAP can serve as a guiding principle to assist designers in comprehending the distinct roles fulfilled by each component.The CAP proposal comprises four functional layers,organized in a suggested hierarchy of materials.Particularly notable is the inclusion of a ceramic-composite principle,representing an advanced and innovative solution in the field of armor design.This paper showcases real-world defense industry applications,offering case studies that demonstrate the effectiveness of this advanced approach.CAP represents a significant milestone in the history of passive protection,marking an evolutionary leap in the field.This philosophical approach provides designers with a powerful toolset with which to enhance the protection capabilities of military vehicles,making them more resilient and better equipped to meet the challenges of modern warfare. 展开更多
关键词 Passive armor protection Composite armor Ballistic performance Protection systems Vehicle protection Armor design
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