遼寧省鹽堿地利用問題研究
[Abstract]:With the development of science and technology, saline-alkali land is no longer a barren land, but an important land resource. It is very important for our country to develop and utilize saline-alkali land reasonably and protect the environment of saline-alkali land from being destroyed. Because of the special geographical environment, there is a large area of saline-alkali land in the coastal areas of Liaoning Province, such as Panjin City, Yingkou City, which is close to the entrance to the sea, and Wafangdian in Dalian, historically belonging to the heavy saline-alkali soil area. The Plandian and Zhuanghe areas are close to the Yellow Sea and Bohai Sea, and there is also a large area of saline and alkali land. The soil is a typical coastal saline soil, that is, the whole soil is high in salt content, and the salt composition is mainly chlorinated. Although saline-alkali land has low yield and even barren land, its flat topography and irrigation make saline-alkali land become an important reserve resource of land. Therefore, since ancient times, humans have not stopped the improvement and utilization of saline-alkali land. This paper starts with the research background, purpose and significance of saline-alkali land utilization, understands the current situation and trend of saline-alkali land utilization at home and abroad, analyzes the national conditions of China, and according to the specific situation of Liaoning Province, through investigation, Further analysis of Liaoning Province in the use of saline-alkali land what effective measures. Through the analysis, we find out which problems need to be solved further and put forward some countermeasures, so as to realize that the saline-alkali land resource is an important resource for sustainable development, and it is of great significance to utilize saline-alkali land effectively. The first chapter is introduction. This paper discusses the research background, significance and purpose, content and framework, methods and innovation points of the paper, and reviews the related research at home and abroad. The second chapter is related concepts and theoretical basis. This paper defines the concept of saline-alkali land and its utilization, and expounds the theory of sustainable development and agricultural technology extension. The third chapter is the present situation analysis of saline-alkali land utilization in Liaoning Province. The present situation of saline-alkali land utilization in Liaoning Province is analyzed from the following aspects: distribution, cause of formation, utilization effect, technical measures and Liaoning project of "Bohai granary". The fourth chapter is the analysis of the problems and causes of saline-alkali land utilization in Liaoning Province. This paper expounds that the concept of sustainable utilization of saline-alkali land in Liaoning Province is not unified, the financing channel is not enough, the sustainable development is ignored and ecological benefit is ignored, and it is difficult to popularize the technology of sustainable utilization of saline-alkali land. There are five problems in low utilization efficiency of saline-alkali land resources, and the causes are analyzed. The fifth chapter is the countermeasures and suggestions of saline-alkali land utilization in Liaoning Province. This paper puts forward the idea of cultivating sustainable utilization, scientifically drawing up the plan of saline-alkali land management, strengthening the guarantee of policies and funds, continuing to increase the intensity of ecological management, and carrying out agricultural technology extension work. Vigorously develop supporting technology and application mode of six improvement measures. The sixth chapter is the conclusion and prospect.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:S156.4
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