我国茶叶出口遭遇绿色贸易壁垒的原因及对策

我国茶叶出口遭遇绿色贸易壁垒的原因,有安全意识增强和保护本国利益等外部原因,也有生产技术落后、品质低下、标准体系落后和缺乏品牌等内部原因.运用提高生产水平,进行国际认证等对策可以有效地规避绿色贸易壁垒对茶叶出口的影响.     

浅析如何提高我国农业国际竞争力

在深入分析影响我国农业国际竞争力因素的基础上,结合当前我国实际情况,提出了一些提高我国农业国际竞争力的有效措施,以期对我国农业发展提供一些启示。     

依托驻保高校产业化拓展就业渠道的途径及对策研究

加快高校产业化进程,建立产学研一体化技术创新机制,是目前拓展就业渠道,促进就业工作的新模式.从驻保高校产业化发展现状出发,从技术优势、人才优势和校企合作优势3个方向阐述了通过驻保高校产业化拓展就业渠道的影响和意义,最后通过具体案例介绍了拓展就业渠道的途径手段.     

国际大都市农业科技园区发展的新路径

基于对全国农业科技园区发展模式和国际大都市农业科技园区建设条件与新需求的综合分析,提出了国际大都市农业科技园区现代农业服务业6大创新服务内容,即：农业高端研发、农业信息服务、农业金融服务、农业会展服务、农业规划咨询、农业现代物流。初步探讨了现代服务业在国际大都市农业科技园区内部和全国农业产业化发展中发挥的重要作用。     

新疆国际客源市场时空发展变化分析研究

利用集中度和亲景度、竞争态指标,对新疆国际客源市场13个主体客源国1997～2004年统计数据进行分析,揭示国际客源时空演替规律,指出新疆主要的3个国际客源市场是日本、俄罗斯和美国,并提出了拓展国际客源市场的建议。     

论反垄断法视野下国际并购行为的法律规制

随着经济全球化深入发展,资本流动的形式日趋多样化,国际并购即是这股资本流动浪潮中最为重要的一种形式。我国应在反垄断法相关规定的基础上,立足我国具体国情,借鉴欧盟、美国关于国际反垄断规制的先进经验,完善我国关于国际并购行为规制的反垄断法律体系,加强《反垄断法》在规制国际并购行为中的可操作性,实现国际并购行为的积极效应,促使我国经济实现可持续发展。     

Combined mutations in five wheat STARCH BRANCHING ENZYME II genes improve resistant starch but affect grain yield and bread-making quality

Increases in the proportion of amylose in the starch of wheat grains result in higher levels of resistant starch, a fermentable dietary fiber associated with human health benefits. The objective of this study was to assess the effect of combined mutations in five STARCH BRANCHING ENZYME II (SBEII) genes on starch composition, grain yield and bread-making quality in two hexaploid wheat varieties. Significantly higher amylose (∼60%) and resistant starch content (10-fold) was detected in the SBEII mutants than in the wild-type controls. Mutant lines showed a significant decrease in total starch (6%), kernel weight (3%) and total grain yield (6%). Effects of the mutations in bread-making quality included increases in grain hardness, starch damage, water absorption and flour protein content; and reductions in flour extraction, farinograph development and stability times, starch viscosity, and loaf volume. Several traits showed significant interactions between genotypes, varieties, and environments, suggesting that some of the negative impacts of the combined SBEII mutations can be ameliorated by adequate selection of genetic background and growing location. The deployment of wheat varieties with increased resistant starch will likely require economic incentives to compensate growers and millers for the significant reductions detected in grain and flour yields.     

Dough rheological properties and noodle-making performance of non-waxy and waxy whole-wheat flour blends

Dough rheological properties and noodle-making performance of non-waxy whole-wheat flour (WWF) with partial- or full-waxy (PW- or FW-) WWF substitution were studied. The substitution levels were 0, 250, 500, 750, and 1000 g/kg, respectively. FW-WWF reduced the peak viscosity and pasting temperature of WWF blends as its substitution level was increased due to its higher proportions of B-type starch granules and short amylopectin chains, while PW-WWF increased peak viscosity with the increasing substitution level because of its higher amylopectin content. As demonstrated by farinograph and rheometer measurements, FW-WWF interfered with gluten development because of the increased competition for water by arabinoxylans and amylopectin; however, PW-WWF enhanced dough strength due primarily to its increased protein content. Consequently, FW-WWF showed a detrimental effect on cooked noodle texture as the cooked noodle hardness was reduced by 50% at the 1000 g/kg substitution level. In contrast, PW-WWF enhanced noodle integrity and elasticity by increasing cooked noodle cohesiveness and resilience by 10.1% and 14.8%, respectively, at the 1000 g/kg substitution level. The results suggest that with waxy WWF substitution, the changes in starch composition, arabinoxylans, and protein content could modify the interactions among flour components and influence the quality characteristics of noodle products.     

中国玉米国际竞争力的分析及启示

采用相关最新数据,对中国玉米的生产要素、贸易竞争力指数、国际市场占有率和显示性比较优势指数进行实证分析,并与国际相关指标进行对比解析。结果表明,近10年来中国玉米的国际竞争力虽有一定的竞争能力,但呈下降趋势。中国玉米竞争力存在价格和非价格两个方面主要因素,通过分析中国玉米竞争力发展的优劣势,未来中国玉米竞争能力的提高应注重发展特色玉米农业、降低成本、拓展市场多元化、完善政策扶持和保障等。     

海南国际旅游岛旅游自然环境现状调查

旅游自然环境现状调查与评价是旅游规划、旅游开发和旅游管理的基础和前提。依据国家标准GB/T18972-2003《旅游资源分类、调查与评价》对海南自然旅游资源进行调查、分类与评价研究的结果表明：海南自然旅游资源有4个主类、16个亚类和61个基本类型,分别占全国的100%、94.1%和85.9%;海南自然旅游资源单体335个,特品级旅游资源单体有47个,占总数的14.0%,优良级旅游资源单体225个,占67.2%,普通级旅游资源单体48个,占14.3%,未获等级的旅游资源单体62个,占18.5%,而其自然旅游资源单体主要集中分布在中部山区、东部海岸和三亚市。同时通过收集、统计、整理海南省近5年来的环境质量公报资料,分析海南自然旅游环境质量的变化情况,得到了海南省水环境、空气环境、声环境总体质量良好的调查结果,但部分被监测城市（镇）噪声污染较重,因此,尽管海南省生态环境总体质量优良,但仍然面临着较大的威胁。