Research On The Regulatory Role Of Farming System On Agricultural Water Demand

The development of agriculture is inseparable with the evolving of farming system. Farming systems as a coordinated production and nature of human subjectivity important means, and has traditionally been used to solve a variety of agricultural production in the face of restrictive factors. The current development of China's agriculture is facing the dual pressures of yield and water saving. Water is the major restrictive factor for crop production. So how to improve our farming system to adapt the demand of the development of agriculture is vital for us. And water saving potential in the farming systems within the mining reform is currently an important part of our farming system.Farming systems have distinct regional characteristics, and are traditionally be classified according to cropping system. Farming systems are often studied, but the match between water resource and farming system is seldom researched. The formation in history of a regional history of farming systems is developed by adjusting to the basic resources, to the local economic, to the productivity of farming and the development of local society, especially by the local water and heat conditions. In another way, the development of farming systems and changes from the small-scale in field like inter-species intercropping and stubble covering to the large-scale in region like crop layout, planting structure adjustment, etc., also influence the local agricultural water demand from the farming land scale to the region scale. So it is very meaningful to discuss the match between farming system and region water resources.The research on farming system and the demand of water for agriculture is very popular in and out abroad. But many of these researches are argue about only one aspect of farming system or the demand of water for agriculture. These studies for the farming systems and agricultural water demand have important reference value in itself, but are not enough to understand the relationship between the whole farming systems and agricultural water demand. So to talk about that issue on the whole view is the entry point for this article. This paper discusses the relationship between farming system and the demand of water for agriculture as a whole.This paper studies the mechanism of the different farming systems for agricultural water requirement and analysis the coupling relationship between different cropping systems and regional water resources by focus on the planting system which has obvious regional characteristics. Firstly, this paper discusses the impact of every aspect of farming system to the demand of water for agriculture. Then the coupling relationship between the planting system and the amount of water resources in a region is discussed, because the planting system is more regionally. On this study GIS is used to evaluate the coupling relationship of the planting system and the amount of water resources, and evaluate the coupling relationship from the deferent times for a crop's life. Then the relationship on region scale is also evaluated by using GIS. This research chooses the whole country and one province as instance to discuss. The coupling relationship on grid scale and region scale are all discussed. The evaluating is used to conduct how to improve the pattern and ratio of crops in a region. At last, linear planning method is used to optimizing the plant system of one province, and analysis of the optimized water-saving conditions.