2014年大蒜形势展望及营销对策

本文以当前大蒜的种植、贮藏和销售情况为基础,分析了大蒜价格波动的影响因素,提出了今年大蒜产业面临的机遇、风险和挑战;并在此基础上,预测了大蒜的价格走势,进一步提出了营销对策,以期为大蒜种植者和经营者提供参考。     

豫北地区枣栽培现状及对策

综述豫北地区枣的栽培现状、存在的问题及发展对策,为豫北地区枣产业的发展奠定基础。     

台湾茶业之考察

本文通过台湾茶业考察见闻,论述台湾茶业的现状与特点,并提出今后发展茶业可参考借鉴台湾发展茶业的一些经验。     

浅析我国种子产业发展概况

该文将从种子产业的规模、行业集中度、科研现状、产品结构和经营模式、推广和流通服务等方面对我国种子产业发展概况进行分析,旨在为种子产业发展提供借鉴。     

Rainfall erosivity and erosivity density through rainfall synthetic series for São Paulo State,Brazil: Assessment,regionalization and modeling

Rainfall is the main cause of erosion of Brazilian soils, which makes assessing the rainfall erosivity factor (RE) and the erosivity density (ED) fundamental for soil and water conservation. Therefore, the objectives of this study were: i) to estimate the RE and ED for São Paulo State, Brazil, using synthetic series of pluviographic data; ii) to define homogeneous regions regarding rainfall erosivity; and iii) to generate regression models for rainfall erosivity estimates in each of the homogeneous regions. Synthetic series of pluviographic data were initially obtained on a sub-daily scale from the daily rainfall records of 696 rainfall gauges. The RE values were then estimated from the synthetic rainfall data, and ED was calculated from the relationship between erosivity and rainfall amounts. Monthly and annual maps for RE and ED were obtained. Hierarchical clustering analysis was used to define homogeneous regions in terms of rainfall erosivity, and regionalized regression models for estimating RE were generated. The results demonstrate high spatial variability of RE in São Paulo, where the highest annual values were observed in the coastal region. December to March concentrate approximately 60% of the intra-annual erosivity. The highest values of annual ED were observed in regions with intense agricultural activity. The definition of five homogeneous regions concerning the rainfall erosive potential evidenced distinct seasonal patterns of the spatial distribution of erosivity. Finally, the high predictive accuracy of the regionalized models obtained characterizes them as essential tools for reliable estimates of rainfall erosivity, and contribute to better soil conservation planning.     

淄博雾霾天气的气候变化特征及成因分析(英文)

对雾霾的定义、雾霾的区别与联系以及雾霾天气形成的原因进行了阐述,并提出了减少雾霾天气的解决对策,为改善城市环境空气质量提供一定的参考依据。     

京山县农村沼气建设现状、问题及对策建议

该文总结了京山县农村沼气建设取得的成效、指出目前存在的问题并且提出解决问题的建议,并对今后京山县的农村沼气建设工作做出规划与展望。     

安徽省政策性农业保险的现状分析与发展建议

该文通过分析安徽省政策性农业保险的发展现状,指出农业保险发展中存在的主要问题,为安徽省政策性农业保险的进一步发展提出参考建议。     

农机作业标准化发展现状及措施探讨

实施农机作业标准化对于推动农业现代化具有重要意义。阐述农机作业标准化的发展现状,分析农机作业质量存在问题的原因,提出全面推进农机作业标准化的有效措施,以促进农机作业标准化的实现,进而促进农业可持续发展。     

我国糯玉米种质资源的研究现状

糯玉米(Zea mays L.ceretina kulesh)又称蜡质玉米,是一种大众食品,其鲜果穗可用作鲜食或加工,子粒和茎秆可作粮食、饲料。我国是糯玉米的起源地,也是糯玉米种质资源最丰富的国家。从表型水平、生理生化水平、分子水平及遗传育种等方面综述了我国糯玉米研究现状,提出了当前糯玉米种质资源研究存在的问题,并对其研究前景进行了展望。