共查询到19条相似文献,搜索用时 296 毫秒
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冬季管理是柑桔园周年生产中的重要工作,它直接关系到柑桔树能否安全越冬及花芽分化质量和翌年的产量、效益.因此做好柑桔园的冬季管理工作十分重要,是柑桔园免遭冻害或减轻冻害程度的有效途径. 相似文献
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江西柑橘冻后救灾及护理技术措施 总被引:1,自引:0,他引:1
针对江西2008年初遭受50年一遇的冻害,柑桔果园大面积受冻,分析了柑橘冻害的主要气候特点与形式,根据江西的实际情况,提出了冻后桔园救灾及护理措施。 相似文献
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本文据实地调查报道了江西省1991年冬柑枯冻害的天气状况和冻害面积、程度、损失等,并分析了致冻天气、冻害症状、冻害因素等特点,为进一步研究柑桔冻害规律,避免或预防冻害,促进柑桔生产稳定发展提供理论依据。 相似文献
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陇南市的武都区和文县属我国柑桔生产最北缘地带,柑桔生产面积曾达1 666.7 hm2,年产柑桔300万kg,是白龙江、白水江沿岸农民增收的主要途径之一.但多年来,各柑桔园因多次发生低温冻害,给柑桔生产造成了很大损失.我们通过多年的栽培管理和丰产试验研究,在实践中总结出了陇南市柑桔生产防御低温冻害的措施,现报道如下. 相似文献
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通过分析陇东地区农业气象自然灾害(干旱、霜冻、冰雹、大暴雨和大风以及干热风等)的发生和对冬小麦生产的影响,并根据实际提出了具体防御措施. 相似文献
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近年来,小麦冻害问题几乎每年都有不同程度的发生,对小麦的产量产生不利影响,给农业生产造成了一些损失。通过对小麦冬季发生的冻害症状介绍及原因分析,提出预防冬季冻害发生的栽培技术和发生冬季冻害后的补救措施,为小麦冻害防御工作提供指导,达到提高小麦产量的目的。 相似文献
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Freeze injury is an usual disaster for winter wheat in Shanxi Province, China, and monitoring freeze injury is of important economic significance. The aim of this article is to monitor and analyze the winter wheat freeze injury using remote sensing data, to monitor the occurrence and spatial distribution of winter wheat freeze in time, as well as the severity of the damage. The winter wheat freeze injury was monitored using multi-temporal moderate-resolution imaging spectroradiometer (MODIS) data, combined with ground meteorological data and field survey data, the change of normalized difference vegetation index (NDVI) before and after freeze injury was analyzed, as well as the effect of winter wheat growth recovery rate on yield. The results showed that the NDVI of winter wheat decreased dramatically after the suffering from freeze injury, which was the prominent feature for the winter wheat freeze injury monitoring. The degrees of winter wheat freeze injury were different in the three regions, of which, Yuncheng was the worst severity and the largest freeze injury area, the severity of freeze injury correlates with the breeding stage of the winter wheat. The yield of winter wheat showed positive correlation with its growth recovery rate (r=0.659^** which can be utilized to monitor the severity of winter wheat freeze injury as well as its impact on yield. It can effectively monitor the occurrence and severity of winter wheat freeze injury using horizontal and vertical profile distribution and growth wheat freeze injury in Shanxi Province. recovery rate, and provide a basis for monitoring the winter 相似文献
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阐述了省(区、市)地方政府作为省(区、市)的核心政府机关,是农业生产和农业自然灾害预防与救助的重要指导者、协调者和管理者,指出在农业自然灾害预防与救助中省(区、市)地方政府有着探索农业自然灾害保险发展模式、构建农业自然灾害应急管理组织机构、农业自然灾害预防与救助信息发布制度、形成农业自然灾害防范和控制配套体系、完善农村社会保障体系、构建多元化的农业自然灾害救助体系6项责任,明确这些责任是农业自然灾害预防与治理的基础,也是农业自然灾害预防与治理长效发展的保障。 相似文献