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作者：周春花张驹肖红茹 Sichuan Meteorological Disaster Prevention Technology Center Chengdu 610072 China Chengdu Meteorological Bureau Chengdu 610072 China Sichuan Meteorological Observatory Chengdu 610072 China

Based on ERA5 reanalysis data,the present study analyzed the thermal energy development mechanism and kinetic energy conversion characteristics of two extreme rainstorm processes in relation to the shallow southwest vortex in the warm-sector during a“rain-generated vortex”process and the deep southwest vortex in a“vortex-generated rain”*** findings were as follows:(1)During the extreme rainstorm on August 11,2020(hereinafter referred to as the“8·11”process),intense surface heating and a high-energy unstable environment were *** mesoscale convergence system triggered convection to produce heavy rainfall,and the release of latent condensation heat generated by the rainfall promoted the formation of a southwest *** significant increase(decrease)in atmospheric diabatic heating and kinetic energy preceded the increase(decrease)in *** contrast,the extreme rainstorm on August 16,2020(hereinafter referred to as the“8·16”process)involved the generation of southwest vortex in a low-energy and highhumidity *** dynamic uplift of the southwest vortex triggered rainfall,and the release of condensation latent heat from rainfall further strengthened the development of the southwest *** significant increase(decrease)in atmospheric diabatic heating and kinetic energy exhibited a delayed progression compared to the increase(decrease)in vorticity.(2)The heating effect around the southwest vortex region was non-uniform,and the heating intensity varied in different *** the“8·11”process,the heating effect was the strongest in the initial stage,but weakened during the vortex's *** the contrary,the heating effect was initially weak in the“8·16”process,and intensified during the development stage.(3)The available potential energy of the“8·11”process significantly increased in kinetic energy converted from rotational and divergent winds through baroclinic action,and the divergent wind energy continued to convert into rotatio

关键词： southwest vortex similar circulation background diabatic heating kinetic energy spatial non-uniform heating effect

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华亭：解放自我释放“神兽” 这个“五一”莲花台景区成全你

华亭：解放自我释放“神兽” 这个“五一”莲花台景区成全你

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平凉日报

作者：马斯梦茹马智遥

今年以来，华亭市关山旅游经济区管委会以全省“引大引强引头部”和全市“优化营商环境提质增效年”行动为契机，聚焦市委、市政府持续“攻坚大项目、全域优环境、提档惠民生、善治促和谐”工作思路和“三百、三十、三提升”年度目标，... 详细信息

今年以来，华亭市关山旅游经济区管委会以全省“引大引强引头部”和全市“优化营商环境提质增效年”行动为契机，聚焦市委、市政府持续“攻坚大项目、全域优环境、提档惠民生、善治促和谐”工作思路和“三百、三十、三提升”年度目标，鲜明树立“以招商引资论英雄”发展导向和......

关键词：莲花台主题乐园旅游经济区露营地卡丁车

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高温胁迫对禾谷镰孢生长和致病力的影响

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植物保护 2024年第1期50卷 129-136页

作者：徐庆王奥霖聂晓刘伟张昊曹世勤范洁茹周益林甘肃农业大学植物保护学院兰州730070 中国农业科学院植物保护研究所植物病虫害综合治理全国重点实验室农产品质量安全生物性危害因子(植物源)控制重点实验室北京100193 甘肃省农业科学院小麦研究所兰州730070

为探究高温胁迫对禾谷镰孢生长和致病力的影响,本研究测定了禾谷镰孢5株耐高温菌株和4株温度敏感型菌株在25℃和30℃下的菌丝生长速率、产孢量、孢子萌发率以及不同胁迫压力下的生长速率、致病力和DON毒素含量等。结果表明,不论耐高温... 详细信息

为探究高温胁迫对禾谷镰孢生长和致病力的影响,本研究测定了禾谷镰孢5株耐高温菌株和4株温度敏感型菌株在25℃和30℃下的菌丝生长速率、产孢量、孢子萌发率以及不同胁迫压力下的生长速率、致病力和DON毒素含量等。结果表明,不论耐高温菌株还是温度敏感型菌株,30℃高温对其菌丝生长均有抑制作用,但对产孢量和孢子萌发有促进作用;30℃高温能减轻NaCl和CaCl2胁迫对禾谷镰孢生长的抑制,但是不影响KCl、刚果红,SDS和H2O2对病原菌的抑制作用;在30℃下,大部分耐高温菌株的致病力不变或降低,而大部分温度敏感型菌株的致病力反而增加,30℃对大部分菌株的DON毒素产量有一定促进作用。研究结果可为研究气候变化下小麦赤霉病的流行和预测提供理论基础。

关键词：禾谷镰孢高温胁迫渗透胁迫致病力 DON

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