| Using land suitability as the evaluation system of planting crops,through the corresponding evaluation index,can reflect the planting suitability distribution of crops in a region,so as to provide a scientific theoretical basis for local agricultural production,can speed up the pace of local transformation and restructuring,and promote the local agricultural development has an important impact and significance.This paper takes Hailin farm of Heilongjiang Province as the research object,according to the guideline of cultivated land productivity evaluation compiled by the National Agricultural Technology Extension Service Center,four factors of site conditions,i.e.terrain position,slope,thickness of cultivated layer and drought resistance ability,seven factors of physical and chemical properties of cultivated layer,i.e.organic matter,available phosphorus,available potassium,pH,available manganese,available zinc and available copper,are determined by these factors The evaluation index weight of rice,and then through the rearrangement of each index,finally comes to the classification table of corn suitability index.Through the comparison of the classification table,we can conclude that the corn suitability evaluation of cultivated land in Hailin farm can be expressed in four grades: first,highly suitable cultivated land,which has fertile soil and high corn yield,with an area of 23629.7 mu,accounting for14.95% of the total cultivated land area;second,suitable cultivated land The soil of this kind of cultivated land is moderate,with an area of 119287.6 mu,accounting for75.49% of the total cultivated land area;the third is barely suitable cultivated land,with a more restrictive factor of 12586.9 mu,accounting for 7.97% of the total cultivated land area;the fourth is unsuitable cultivated land,which has more sand and poor field infrastructure,with an area of 2504.5 mu,accounting for 1.59% of the total cultivated land area.Based on the analysis and evaluation of corn planting suitability in Hailin farm,thepaper puts forward the corn planting countermeasures and suggestions in Hailin farm,and proposes to expand the corn planting area in highly suitable and suitable cultivated land,especially with the help of the 100000 Mu corn national green food raw material standardized production base construction established by Hailin farm,so as to further improve the quality and quality of corn in Hailin farm,and further develop with the domestic and foreign countries Large enterprises and scientific research institutes cooperate to jointly promote corn refining and deep processing projects,utilize agricultural investment and agricultural development projects,further improve agricultural infrastructure,and improve the comprehensive utilization rate of cultivated land;it is suggested to increase agricultural infrastructure investment for barely suitable cultivated land,transform medium and low yield fields,and increase the input of organic fertilizer and less chemical fertilizer through scientific and reasonable agricultural and technical measures It is suggested to reduce the corn planting area,speed up the transformation mode and structural adjustment,and explore the development of forest and fruit production and other economic crops according to local conditions. |
