关于我国蔬菜市场行情监测预警体系建设的思考r——基于种子供需行情角度

来源 :中国蔬菜 | 被引量 : 0次 | 上传用户:q263742139
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
近年来,我国蔬菜产品局部性、结构性滞销问题频发,市场价格异常波动频繁,导致居民消费价格指数(CPI)发生明显变化,挫伤蔬菜生产经营者的积极性,不利于我国蔬菜产业的健康发展,对国民经济平稳运行构成不利影响.我国作为世界最大的蔬菜生产国和消费国,2019 年蔬菜种植面积和总产量分别达到2087 万hm2 和7.21 亿t(丁海凤 等,2020),结构性生产过剩的问题已经成为行业共识,目前中国农业发展的主要矛盾已经由过去的总量不足转变为结构性矛盾(魏后凯,2017).
其他文献
Setosphaeria turcica (syn. Exserohilum turcicum) is the pathogenic fungus of maize (Zea mays) that causes northern leaf blight, which is a major maize disease worldwide. Melanized appressoria are highly specialized infection structures formed by germinate
Methane (CH4) emissions from ruminant production are a significant source of anthropogenic greenhouse gas production, but few studies have examined the enteric CH4 emissions of lactating dairy cows under different feeding regimes in China. This study aime
Poleroviruses, which are distributed worldwide, infect many crops of economic importance and cause severe plant diseases. Brassica yellows virus (BrYV), which has three genotypes, A, B, and C, is a newly identified polerovirus infecting crucifer crops in
Mechanisms controlling phosphorus (P) availability and the roles of microorganisms in the efficient utilization of soil P in the wheat–maize double cropping system are poorly understood. In the present study, we conducted a pot experiment for four consecu
Secondary metabolites are closely related to the nutritional quality and health functions of plants. We investigated the secondary metabolites of both wild (n=23) and cultivated (n=27) pomegranate plants (Punica granatum L.) growing in China. The total fl
High-oleic acid peanut oil (HOPO) and extra-virgin olive oil (EVOO) have been reported previously to have an attenuating effect on metabolic syndrome (MS). This study aimed to evaluate the metabolic effect of HOPO and EVOO supplementation in attenuating M
African swine fever (ASF), caused by the African swine fever virus (ASFV), is a devastating disease of domestic and wild pigs. There is no effective vaccine, and the control of the disease relies mainly on surveillance and early detection of infected pigs
The potato cyst nematodes ( PCN ) Globodera rostochiensis (Wollenweber) Skarbilovich, 1959 is considered the most damaging nematode pest of potato worldwide that causes significant yield losses, and this nematode is recognized and listed as a quarantine n
期刊
In the postharvest processing of tea leaves, withering is the first indispensable manufacturing process which produces the mellow, umami and sweet taste of white tea. In this study, we aimed to determine the dynamic changes of the main metabolites and cla
Corn (Zea mays L.) accounts for the largest shares of planting area and total yield of grain crops in China. Corn production has played a significant role in the country\'s development of agriculture and national economy. Harvesting requires the largest
期刊