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1.
2006—2007年对从国际水稻研究所引进60份及国内育成50份水稻种质资源进行白叶枯病及稻瘟病抗性、主要农艺性状进行了系统的研究和评价。结果表明,110份水稻种质资源高抗至中抗白叶枯病23份,占供试材料20.91%;抗稻瘟病18份,占16.36%。经鉴定评价筛选出7份同时抗白叶枯病和稻瘟病的双抗性材料,且它们的主要农艺性状有很大差异,表明这些种质资源具有丰富的遗传多样性,对选育高产抗病水稻新品种(组合)具有重要利用价值。  相似文献   

2.
According to Gibrat's Law of Proportionate Effect, the growth rate of a given firm is independent of its size at the beginning of the period examined. While earlier studies tended to confirm the Law, more recent research generally rejects it. The aim of this paper is to test whether Gibrat's Law is confirmed, for the 1995–2005 period, for a large sample of firms active in the Veneto region of Italy. Controlling for firm age and size, findings show that the Law is not confirmed in the early stages of a firm's life cycle, with younger firms growing faster than established ones, whereas it cannot be rejected once a given threshold in terms of age is reached. These findings are consistent with the life cycle theory of the firm and with the hypothesis that fast growing small and medium‐sized enterprises may have played a role in the evolution and the structural transformation of local systems in the “Third Italy” during the 1990s and early 2000s.  相似文献   

3.
列举农村食品安全现状,浅析《中华人民共和国食品安全法》将对农村食品安全问题的改观起到的巨大影响和作用,针对常遇到的一些消费者食品安全意识模糊、维护自身权益观念薄弱等问题,结合《食品安全法》的相关条文,提出改进我国农村食品安全的一些建议和措施。  相似文献   

4.
农村家庭联产承包责任制的土地流转研究   总被引:4,自引:0,他引:4  
徐兆基 《中国农学通报》2008,24(11):526-529
改革开放以来,家庭联产承包责任制对我国农村社会经济的稳定与发展有过功不可没的贡献。但自我国经济体制转向社会主义市场经济以来,这一产生于计划经济年代的制度,其本身的先天不足日显突出,尤其在土地流转方面的缺陷难以满足社会经济发展的需要。因此,创设“土地银行”,构建新的农地流转机制,完善现有农村土地承包制度已经势在必行。  相似文献   

5.
The purpose of this paper is to examine the usefulness of homothetic reformulations of the shift-share accounting model to the practitioner of regional growth studies. The reformulations of Esteban-Marquillas (1972) and Arcelus (1984) are examined to determine if they improve the shift-share framework as a means for accounting for regional economic growth or decline. The purpose of the homothetic models is to separate out change in a region's employment (or value added) associated with its prior or base year specialization in particular industries from change associated with changes in the mix of industries that occurred during the period under study. It is contended while the resulting accounts may help in understanding individual industry's growth rates, they shed little light on total regional growth. Indiana employment data from 1977 and 1986 are used to illustrate the arguments.  相似文献   

6.
In this paper, the problems of bringing natural resources and environmental condition into accounting are discussed and lay emphasis on object measurement, imaging and disclosure in accounting report of environmental accounting. The author suggests that the environmental accounting is the necessary production of global economy for sustainable development in modern society; it is also a new ecological accounting subject formed by the result of environmental economies and accounting penetrating into each other. As a contribution of accounting circles to sustainable development, environmental accounting has become a hot topic in recent years.  相似文献   

7.
This paper analyzes the deep reasons why the benefits are always poor though China has controlled the vehicle exhaust for more than ten years, as well as a successful experience of the developed countries. Contrasting the deficiencies of the previous Air Pollution Control Law and advantages of the present Air Pollution Control Law , the paper indicates the organization structure and management system of the EPA are not entirely eligible for the tasks though the new law entitles environmental administrations to strengthening the exhaust control. It calls for that, according to principle that a structure results in a function, China must establish the management system of vehicle emission control in metropolises as soon as possible. So we can implement this law and improve urban air quality that has deteriorated due to vehicle exhaust. This paper puts forward organization form, functions, tasks and effect of this system.  相似文献   

8.
The Tendering and Bidding Law" states that the bidder should not compete bidding through quoted price lower the cost, but it does not ascertain the meaning of the cost of building product. It is the purpose of this paper to ascertain the meaning of the building product cost. The calculation bases of both the social average product cost and of the enterprise individual product cost are analyzed and they are compared with each other. The authors point out that for some enterprise there is individual product cost lower the social average product cost. The function of design mechanism of bidding is revealing "private information" on "the lowest price". The purpose of carrying out bidding is introducing competition, reducing the cost for the owner and realizing the maximum yield. Both indicate the cost of building product, mentioned in "The Tendering and Bidding Law" should be the enterprise individual product cost.  相似文献   

9.
日美国家农业立法的发展趋势及启迪   总被引:1,自引:0,他引:1  
农政管理法制化,它是政府进行调控、干预、管理、监督农业经济活动的主要手段。日美国家为实施《农业基本法》、《农业法》专门修改有关法律和制定大量相配套的新法律。制定完善农业基本法,为农业各种政策提出一个基本方向;重视农业投入立法,建立完善投入机制;通过农产品市场立法,稳定发展农产品市场;加强自然资源保护和环境及其它方面的立法;制定调整农业经济关系和技术推广及强化农业主体、粮食保护等其他法律。 形成了较为完善的农业法律体系,真正实现了以法治农。  相似文献   

10.
In this paper a point of view is expressed that the fairness of accounting measurement in anti-dumping holds a vital status. It should be considered fully that the positive connection exists between the anti-dumping and the fairness of accounting measurement and it is very important to anti-dumping.The fairness in accounting measurement is the extending of fair trade of WTO. However,the difference between the standards of China's accounting and international accounting to certain extent does exist. In this paper, the fairness in accounting measurement in view of identification, transparence, international coordination and objective justice are expounded. It is concluded that in the process of anti-dumping, the identification of fairness in accounting measurement rests with present value and historic cost of market economy. The transparence is the premise of fairness in accounting measurement. The necessary and possibility exist in international coordination, The objective market condition in setting up the fairness in accounting measurement should be taken into account and the unity, different arrangement, utility and reliability be embodied.  相似文献   

11.
为了促进《中华人民共和国环境影响评价法》的实施,为了把环境保护的意识渗透到生态城市规划的各项社会经济发展战略中,在生态城市规划的早期阶段充分考虑环境的影响,实现城市的可持续发展,鉴于生态城市规划在国内外都很盛行,笔者以哈尔滨市为例,针对生态城市规划环境影响评价的特点,参照宋永昌等人提出的生态城市的评价指标体系,构建了适合生态城市规划环境影响评价的方法系统,即采用适合生态城市规划环境影响评价的数学模型,对城市复合生态系统进行定量分析,该方法以层次分析法为基础,将生态综合指标分为生态系统结构、城市功能和城市协调度3个目标子系统,并在此基础上细化评价因子,通过矩阵运算确定其权重和指标数值,再根据适当的评价标准,得出评价结论。本研究运用此方法系统,对黑龙江省哈尔滨市生态城市规划进行了实证研究。通过计算分析得出,哈尔滨市生态化程度一般,并指出其在生态城市规划过程中存在的问题以及环境影响减缓对策。  相似文献   

12.
Two problems often appear in estate auction.The first is to whom the buyer can claim cancellation of the contract,if he can't get the estate.The second is whether the tenant can still claim his priority to the estate.In auction,we can't use the principle of agency,fiduciary and mediation to explain the relations among client,auctioneer and buyer,because it doesn't accord with the auction practices and the Action Law section 40.The undisclosed agency in Contract Law may be an adapt explanation to the relations.According to the law hermeneutic,we should narrow the scopes of the tenant priority and exclude it from auction.  相似文献   

13.
区域农业景观视觉资源评价——以滦县为例   总被引:1,自引:1,他引:1  
农业景观是中国重要的乡村景观资源,为了有效利用、建设和规划景观资源,笔者以滦县为案例,通过视觉质量和视觉敏感度对研究区域进行综合评价。视觉质量以VRM系统为基础从地貌、植被、水体、色彩、毗邻风景、视觉愉悦度等6个指标进行了评价;视觉敏感度选择相对坡度、相对视距和可视频率作为评价指标进行评价。将两种评价结果利用GIS系统等权重叠加,用自然断点法将视觉资源分为4个等级,Ⅰ级占总面积43.65%、Ⅱ级为37.21%、Ⅲ级为15.17%、Ⅳ级为3.97%。结果表明:滦县总体视觉资源较好,但中部一些乡镇景观视觉资源有待提高。  相似文献   

14.
Considering the importance of 500 kV line and taking 500 kV transmission line in Chongqing as an example, the authors calculate lightning strike outage rate (including return stroke and lightning shielding failure) using regulation method, outage rate of return stroke using travelling wave method, and outage rate of lightning shielding failure using EGM. By comparing and analysing the calculating fesults, weakness of insulation and the area of easy to striking are found out, and corresponding improving measure is brought forward. The results show bigger gradient of lightning higher return stroke tripping, and in regulations result of accounting return stroke tripping is more closed to practical experience, accounting shielding failure rate exists obviously defect, and in EGM accounting shielding failure rate have take much factor, result is more close to practical experience.  相似文献   

15.
To know the species composition, life form, seasonal features and application of woody landscape plants in Jinan City, woody landscape plants in the city were investigated comprehensively. The investigation shows that there are 535 woody landscape plant species in the city in total(including variants, subspecies and cultivars), belonging to 199 genera of 77 families. Among the 535 species, there are 49 gymnosperm species of 16 genera, 5 families, 486 angiosperm species of 183 genera, 72 families(including 467 dicotyledon species of 174 genera, 69 families, 19 monocotyledon species of 9 genera, 3 families). The fi gures refl ect rich woody landscape plants in Jinan City. There are 286 tree species, accounting for 53.4% of the total species; 216 shrub species, accounting for 40.4% of the total; 33 vine species, accounting for 6.2% of the total, thus tree and shrub species are diversifi ed, while vine species are limited. Among all tree species, there are 103 evergreen species, accounting for 19.25% of the total; 432 deciduous species, accounting for 80.75% of the total; so deciduous tree species occupy a prominent position. Woody plants in Jinan City are applied in diversifi ed forms, but seldom in innovative forms. Problems in the current application of woody landscape plants in the local area are summarized as(a) there are diversifi ed tree species, but only a few of them are applied in high effi ciency;(b) evergreen tree species are less used;(c) indigenous tree species are insuffi ciently used. Therefore, suggestions are given as(i) combine landscape plants scientifi cally;(ii) promote indigenous tree species;(iii) introduce and domestic new species actively. The investigation results provide scientifi c theoretical support for the sustainable utilization of woody plant resources in Jinan City.  相似文献   

16.
从甘肃省C县农业行政执法机关依法查处一起农民个人销售假油菜种子“春华501油菜”案例出发,探讨了《中华人民共和国种子法》(以下简称《种子法》)对农民特权的法律规定,从不同法律要素解析了“农民销售、串换自繁自用剩余常规种子”行为合法与违法的界线,为今后各级农业行政执法机关依法管理类似种子案件提供参考和借鉴。  相似文献   

17.
The Environmental Impact Assessment Law of our country stipulated that the project and construction items should be assessed using the method of environmental impact. The planning office becomes the agent of environmental impact assessment is as important as the agent of project construction for the first time. The scope, duty, and the legal responsibility of the agent, which does the assessment using the method of environmental impact, should be standardized and perfected. It will be helpful to implement the work of environmental assessment and make it legal.  相似文献   

18.
The economical relationship and economical system are deeply influenced by contemporary property system and the modern construction enterprise system requires a new adaptive accounting system. According to property right economy this paper analyzes its influence upon environment of accounting and puts forward a basic form of accounting system of modern construction enterprise under property right economy.  相似文献   

19.
GIS支持下的商南县小麦生态适宜性评价及种植区划   总被引:1,自引:0,他引:1  
小麦是陕西省商南县重要的粮食作物,进行该区域小麦种植区划,对因地制宜种植小麦、优化区域布局有重要意义。利用GIS技术、县域耕地资源管理信息系统和层次分析法,对商南县小麦种植进行了生态适宜性评价。用专家经验法筛选各生态因子评价指标,建立了商南县小麦生态适宜性评价指标体系;将层次分析法和模糊评价法运用于各指标权重的定量计算,采用地理信息系统软件ArcGIS9.3的叠加分析功能,得到商南县小麦种植生态适宜性评价图。结果表明:高度适宜小麦种植的农田有8323.97 hm~2,占耕地面积的33.50%,适宜的有10557.46 hm~2,占耕地面积的42.49%,这两类耕地主要分布于本区域的浅山与丘陵地带,占总耕地面积的75%以上,是商南县耕地的主体;同时,本区域内余下的耕地主要分布在中山地貌区,包括勉强适宜小麦种植、不适宜耕作的耕地两种,分别有4423.41 hm~2和1543.43 hm~2,仅占耕地总面积的17.80%和6.21%。因此,通过对商南县小麦种植环境的统计和分析,总结了当地生态适应度分布的规律并绘制了空间分布图,从而为商南县在进行小麦或同类作物种植时,进行合理布局与规划提供科学依据。  相似文献   

20.
研究内蒙古西部马铃薯主产区马铃薯晚疫病菌的交配型组成及对3种常用杀菌剂的敏感性,为生产上防治马铃薯晚疫病提供依据.2008年从内蒙古西部马铃薯主产区分离94个马铃薯晚疫病菌株中,测定其交配型,结果表明,82株为A1交配型,占被测菌株的87.2%;8株为A2交配型,占被测菌株的8.5%;4株为A1A2交配型,占被测菌株的...  相似文献   

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