Study On Produetion Potentialiyt Of Slope Land In Sumi-Arid Regions

This article from the land productive potential of Chifeng City Chengzi Township, combining slope distribution, taking into account the impact of natural ecological factors light, temperature, water, soil and other crops, the use of mathematical models to calculate the photosynthetic area of major crops of corn, light and temperature, climate and land production potential, identify constraints in the area of productivity improvement factor, the main way to explore the potential of agricultural production and development. The main conclusions are as follows:(1) Cheng Zi Xiang terrain of West High East is low, from west to east of the terrain can be divided into nine grades, the west east relatively flat, relatively steep, the first grade0～3°slope distribution in Cheng Zi Xiang middle flat on both sides of the river, a film distribution; second.3～8°gradient distribution in Cheng Zi Xiang East; third8～15°slope distribution or in the East region, middle and west a little; fourth file15～25°slope distribution is in the middle and west region; the fifth of25～35°slope distribution parts are present in the west the mountain; according to the classification standard of conventional and cultivated land use, land area is suitable for the use of33548hm2of cultivated area, not suitable for the use of2252hm2, the area has a large number of smaller slope land can use.(2)Photosynthetic production potential for the study area is43382.45kg/hm2,Production capacity is seven times of reality6415.96kg/hm2;After the temperature coefficient of the revised effective.Production potential of light and temperature is31669.19kg/hm2;After the effective coefficient of water amendmentjProduction potential climate is19318.21kg/hm2,is three times of reality;After the effective coefficient of soil amendments.Land production potential is15068.19kg/hm2,Reality production capacity reached only43%of land production potential,Chengzi Township yield potential margin is135%.Through the above analysis can be found,Chengzi Township have greater potential to improve land productivity space.(3)Combination of these potential land productivity analysis,Limiting factor productivity play their importance is Water,soil,temperature and other factors. So we can make the land productive potential into full play,by Strengthen water conservancy construction,Adjust the slope water:Scientific and rational planning,Development of regional slope land use planning:Development of a variety of methods.such as planting corn as the main way.