Fish Farming In Tideland To Saline-Alkali Land Improvement Effect And Effectiveness’ Study

Reduction of arable land, resource shortages and environmental degradation, which caused by population growth, have become the three crises of humanity development in contemporary. Land resources have been overwhelmed, the situation seriously restrict the survival and development of human society. Land resources will not be able to meet people’s need for food, fresh water and energy, opening up new living space, has become one of the problem which is urgent need to address. Coastal beach resources as an integral part of marine resources is the forefront of ocean development, huge coastal resource is the main added of construction land. Good use of this piece of great development value of land resources, to alleviate the increasing shortage of land conflicts, promote the adjustment of agricultural structure and promote economic development of littoral, has great significance.Newly reclaimed beach, because of it’s salty soil and low organic matter, is a piece of useless saline, it must go through a wash of salt and enhanced soil fertility before use. Fish farming is a good measure of tidal flat Saline-alkali soil improvement, because tidal flat’s area is ten thousand acres and even hundreds of thousands acres. Fish farming can make rapid decline of soil salinity, this mode can reduced2/3of the saline improvement cycle by conventional way, general as long as3to5years, the organic matter in Saline-alkali soil can reach the request of farming after fish farming, This mode not only achieve rapid improvement of tideland saline soil and rapid increasing land resources but also can obtain some economic benefits. In addition, construction investment of large water fish farming soil improvement is little, only over1000yuan per acre. and the beach pond construction is flexible to fish back to field, after fishing, just increase a little investment the pond can become to the standard of the field.Soil improvement by fish farming has been some success experience and a certain amount of technical base, such as project support, farming techniques, fertilization, etc. However, in the fish-soil improvement technology system, the research of different stocking model’s effectiveness and efficiency to saline-alkali soil and factors affecting efficiency is rare. No research to reach the request soil requirements of farming after fish farming also needed to improve the time. This article was aimed at these issues, focusing on the following research such as the soil improvement effect influence and the effective influence of different patterns’ fish stocking, Different fish cycle effect on soil improvement.In this paper, the better effective stocking pattern, in which people not only can obtain good soil improvement effect and get better economic benefits, is explored. Explore the soil improvement in fish, soil conditions of farming after fish farming also improved the time required for the best. Through this study, we expected to promote fish-soil improvement technology system, applicate this research in tideland area, improve the level of aquaculture in tideland, to promote the high performance utilization of littoral tidal flat and promote the fast development of the regional economic.