With the highlights of the environmental issues,the development of low-carbon economy has become the consensus of all countries,and China is no exception.China is relatively low agricultural country to a level of urbanization.Therefore,the global low-carbon building society as a whole depends on the success or failure of the the rural low carbon building.Low-carbon economic development in rural areas is unsuccessful,the development of low-carbon economy of the society as a whole did not succeed at all.The construction of a low-carbon economy is a systematic engineering,there is no government-led impossible,the government should take the lead responsibility,including legal responsibilities,technical responsibility,economic responsibility,the responsibility of management and supervision,publicity and education,personnel training responsibility and moral responsibility aspects.
Some reform experiences of transforming agricultural undergraduate education from academy-oriented to application-oriented are presented,and the features and methods of education reform are summarized too.Some suggestions for deep exploration of the cultivation of applied talents in agricultural undergraduate education are listed.
Middleware is the key technology at the period of which realize resource management and information recombination.It is software that acts as the glue or plumbing between two separate applications.In acting as an intermediary,it is in perfect position to provide a set of services to the end-applications.Basing on researching middleware technology,it searches for the method that can solve problems such as using of current resource,uploading message,refreshing the home page and search at different database.And it can use present resource effectively,simplify the steps that put up message to the Web,reduce intensity that Web management works,make the Web's message updated automatically.It also can raise the efficiency of using data,increase the scope of search data.
By the method of consecutive extraction, this paper studied the contents and vertical distribution of soil fluorine (F) forms in North Anhui, with their relations to the soil physical and chemical properties analyzed. The results showed that the soil total F (T-F) content in North Anhui was ranged from 265.8 mg . kg(-1) to 612.8 mg . kg(-1), with an average of 423.7 mg . kg(-1), and decreased in the sequence of vegetable soil > fluvo-aquic soil > paddy soil > shajiang black soil > yellow brown soil. Among the T-F, residual F (Res-F) was the main form, occupying > 95% of total F, followed by water soluble F (Ws-F), being about 1.5% of the total, and organic-F (Or-F), Fe and Mn oxide-F (Fe/Mn-F) and exchangeable-F (Ex-F) only had very small amount. The Ws-F content in test soils ranged from 1.35 mg . kg(-1) to 17.98 mg . kg(-1), with a mean value of 6.62 mg . kg(-1). Vegetable soil, fluvo-aquic soil and shajiang black soil had a relatively higher content of Ws-F, while yellow brown soil was in adverse. Soil pH and the contents of soil organic matter, total and available phosphorus, and physical clay were the main factors affecting the contents of various F forms. Soil Ws-F was significantly positively correlated with soil pH and soil total and available phosphorus, soil Ex-F was significantly positively correlated with soil clay ( < 0.01 mm and <0.001 mm), soil Fe/Mn-F was significantly positively correlated with soil total phosphorus, and soil Or-F had a significant positive correlation with soil organic matter. Soil Ws-F content also had a close connection to the parent material. The soil developed from shallow lacustrine and marsh sediments usually had the highest Ws-F content, followed by those developed from Huang River alluvial deposit, Q3 loess, Huaihe River alluvial deposit, and light-texture yellow brown soil, with the mean Ws-F content being 9.05, 8.12, 2.97, 2.05 and 1.91 mg . kg(-1), respectively. The contents of soil Or-F and Fe/Mn-F decreased with increasing soil depth, and those of T-F and Ws-F in vegetable soil were higher in upper than in deeper soil layers.
There are several dangers in message publishing while building e-government web by using Ajax, such as increased attack, Cross-site scripting(XSS), Cross-Site Request Forgery(CSRF) and so on. The paper, from application layer, discusses the mechanism for guaranteeing the safe message publishing. Management mode based on two-level approval is adopted, which uses data sanitizing and checking code to provide a security environment for e-government web message publishing.
Through the analysis in the paddy soils in Anhui province,the magnesium(Mg) content and its Causal factors were studied.The results were as follows:(1) The total magnesium(T-Mg) contents of the tested paddy soils ranged from 1.86 g/kg to 5.40 g/kg,with an average of 3.11 g/kg which was lower than the average Mg content of farm soils in South China.The exchangeable Mg(Ex-Mg) content of the tested paddy soils was 284 mg/kg in average which showed that the Mg supply capacity of the studied paddy soils was higher.The acid soluble Mg(Acid-Mg) was 2.04 g/kg in average.(2) There had been remarkable defference in the Mg contents derived from different parent materials of Anhui province.The Mg contents in the paddy soils derived from Huaihe river alluvium and Changjiang river alluvium were higher than that derived from river deposition and drift deposit.(3) The soil pH value,clay contents and readily available potassium were major factors affecting Mg content.(4) There had been remarkable correlations between Mg contents of rice plant and soil Ex-Mg,Acid-Mg,T-Mg,which showed that the bioavailabilities of Ex-Mg,Acid-Mg,T-Mg in the studied paddy soils were higher.
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