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平阴县核桃种植气象条件分析 总被引:4,自引:0,他引:4
通过对核桃栽培的气象条件以及平阴县核桃种植气候资源的分析,探讨平阴县发展核桃种植产业有利气候条件,并针对影响核桃生长的主要灾害提出了防御对策建议。 相似文献
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利用代表濮阳市公路交通状况的南乐县、范县、濮阳县公路交通事故资料和气象资料,分析了濮阳市公路交通事故发生的一般规律及其与气象条件的关系,以及几种主要气象要素对公路交通的影响,在此基础上提出了减少公路交通事故的防御措施和对策。 相似文献
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保康县龙坪镇位于31°33'~31~4'N,111°22'~111°32'E,地处神农架腹地,与甫漳县三景乡毗邻,海拔高度:最高1840米,最低仅800米,平均1300米。热量资源不足是制约本镇玉米生长发育的主要气象因素。如春季温度回升迟缓,土壤耕作层温度偏低,并时有倒春寒天气发生,致使玉米播种至出苗时间延长,引发烂种缺苗,扬花期低温防雨寡照,有效积温偏少,空秕率增高,千粒重降低,灌浆成熟期阳光少、日照时间短,且易受秋寒危害,成熟度不够。因此,龙坪镇露地玉米一般年景亩产徘徊在120~150千克。1984年试种地膜玉米,1988年大力推行,当年全镇种植地膜玉米8000亩,平均单产达258.4千克。由于地膜覆盖特有的增温保墒效应,促使玉米单产大幅度上升。 相似文献
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通过对台湾大青枣的生物特性及其气象条件进行分析,并指出影响其果品品质的主要气象因素及应对措施。 相似文献
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通过对无棣县冬枣种植气候资源的分析,探讨无棣县发展冬枣种植产业有利的气候条件和影响冬枣生长的关建期和主要灾害。 相似文献
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农村进行种植业结构调整,城郊经济作物趋向名、特、优、精品种的选种,原产于我国南方的茭白已成功引种到乌鲁木齐北郊。本文就茭白的种植与气象条件和服务及病虫害做一些探讨。 相似文献
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Nan WANG Zhenhao LING Xuejiao DENG Tao DENG Xiaopu LYU Tingyuan LI Xiaorong GAO Xi CHEN 《大气科学进展》2018,35(9):1145-1159
Historical haze episodes(2013–16) in Guangzhou were examined and classified according to synoptic weather systems.Four types of weather systems were found to be unfavorable, among which "foreside of a cold front"(FC) and "sea high pressure"(SP) were the most frequent( 75% of the total). Targeted case studies were conducted based on an FC-affected event and an SP-affected event with the aim of understanding the characteristics of the contributions of source regions to fine particulate matter(PM_(2.5)) in Guangzhou. Four kinds of contributions—namely, emissions outside Guangdong Province(super-region), emissions from the Pearl River Delta region(PRD region), emissions from Guangzhou–Foshan–Shenzhen(GFS region), and emissions from Guangzhou(local)—were investigated using the Weather Research and Forecasting–Community Multiscale Air Quality model. The results showed that the source region contribution differed with different weather systems. SP was a stagnant weather condition, and the source region contribution ratio showed that the local region was a major contributor(37%), while the PRD region, GFS region and the super-region only contributed 8%, 2.8% and 7%, respectively, to PM_(2.5) concentrations. By contrast, FC favored regional transport. The super-region became noticeable,contributing 34.8%, while the local region decreased to 12%. A simple method was proposed to quantify the relative impact of meteorology and emissions. Meteorology had a 35% impact, compared with an impact of-18% for emissions, when comparing the FC-affected event with that of the SP. The results from this study can provide guidance to policymakers for the implementation of effective control strategies. 相似文献