Under The Restriction Of Water Area Cultivated Land Resource Development And Utilization Of Research

Sanjiang branch is one of important commodity grain base in our country,the regional production of food mainly supply the provinces in China,holds the extremely important status in our country’s food supply.However,due to the economic interests of drivers,large-scale cultivation of paddy field makes the increasing shortage of water resources has become the main limiting factors of agricultural sustainable economic development in the area of.By 2014,area the existing cultivated land has grown to 8641.52 km~2,compared with 2000 increased by 536.37 km~2.Among them,the paddy field area is increased by 5370.25 km~2,the area has reached 2014 percentage of the cultivated land area of 7289.50 km~2 to 84% from 24% in 2000 to 2000,accounting for area ratio from 16% in 2000 to 60% in 2014.Area of paddy field scale development is rapid,but also shows the tendency of the amplification.In recent years,with the increase of paddy field area,agricultural water consumption increased,the underground water level slash,Ji Dian Jing pump phenomenon happens quite often,cause rice production,the regional agricultural economic losses,the threat to the development of regional economy,the country’s food security.Therefore,in order to guarantee the food security,continuous and stable development of regional economy,the calculation area within the existing under the condition of water conservancy facilities,the mining in the area can use of water resources condition,the reasonable development and utilization of regional cultivated land and paddy field area,become a region based on the condition of water resources reasonable development and utilization of cultivated land,to solve the key problems of agricultural water and domestic water contradiction.This article from the perspective of regional water resources quantity calculated area of cultivated land area.In agricultural areas in Heilongjiang province to build three branch for the study area,on the basis of remote sensing images,two adjustable data of land use,social economy,hydrometeorological data such as data,according to the regional characteristics only around the existing land resource utilization problem,using the principle of water balance analysis of present condition of water conservancy facilities in the area of water supply and water demand.On the basis of the use of mining modulus method to calculate water volume of each farm.Model calculation according to the scale of solving regional cultivated land area is suitable for cultivated land scale.Finally calculates the proper size compared with the existing arable land and paddy field area,the area of cultivated land and paddy field is overrun.For area in the inland waters,the rational development and utilization of soil resources,to provide reference for the suitable size of paddy field problem.Build sanjiang branch consists of 15 state-owned farms,agricultural economy is the main pattern of economic development of the region,agricultural crops mainly rice,agricultural water consumption is huge,so to build sanjiang branch of the cultivated land scale especially paddy field scale research is particularly important.Calculated according to the above calculation process,the main research results obtained in this paper are as follows: through the analysis of water resources,build three branch of groundwater,the over-exploited 987 million cubic meters.Part of farm production overruns seriously,such as farm,strong river,forward farm,daxing farm,seven stars,and forwards(or strikers this a few farm has more than suitable groundwater resources of ground water.Frequently farm has much space can continue to production use of regional water resources.Build sanjiang branch of arable land,the overall size bigger,paddy field,dry land change is most obvious.Paddy field area is increased,the dry land shrinks change rate higher than that of upland and paddy field.By 2014 regional cultivated land scale and the suitable scope is overrun 6411.81 km~2.Among them,the paddy field area is overrun 5303.71 km~2.And regional farmland overrun area is very close,therefore,transfinite area of cultivated land in the area of mainly comes from the increase of paddy field area.Among them,the 859 farm,farm,seven star farm and striker paddy field area is overrun,transfinite area between 360-480 km~2.Two river farm,entrepreneurial farm,thick jiang farm,qinglongshan farm,red guard farms,low farm,farm,sentinel farms and building these farm paddy field area were overrun,transfinite area between 230-290 km~2.Paddy field area change significantly between 2000 and 2014.Not only has a significant change in quantity,also has a significant change in space.And the scale expansion of concentrated type.Paddy field of large area expansion,and the dry land just at the edge of the area into a sporadic distribution exists.Therefore,according to the conclusion in the existing water conservancy facilities built sanjiang bureau,present condition of water resource utilization,the arable land is no longer suitable for continued to expand.