Analysis And Evaluation Of Tobacco Planting Soil In Luoyang City

This article take the Luoyang city tobacco soil as the research object, to Ruyang, Xin’an, Yichuan, Songxian, Mengjin, Luoning, Yiyang seven tobacco-planting counties representative tobacco field soil sampling, in2005and2010respectively.376soil samples collected and104copies on a soil sample, pH value, organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, potassium, zinc, copper, effective iron, manganese, molybdenum were analyzed. Based on the comprehensive analysis of soil samples collected data, and use the Arcgis software on soil pH value and nutrient distribution and variability analysis, can be seen clearly in tobacco planting regions of Luoyang city soil characteristics.1.Luoyang city soil fertility variation of soil is larger, higher pH value, organic matter content is low, should pay attention to the improvement of soil, the application of humic acid organic fertilizer, increase the content of soil organic matter and reduce the pH value of soil.2. Available nitrogen content is high, in production due to the reduction of the amount of nitrogenous fertilizer applied. The average content of available phosphorus in10.35mg/kg, slightly higher than the production of high quality flue cured tobacco (10mg/kg) limit, but uneven distribution, variation coefficient. The average content of potassium in suitable, but produce the potassium content of tobacco leaves is not high, description of soil potassium absorption rate is low, therefore, should change the potash application way, take different furrow, strip method, and the importance of water and fertilizer combined with water, fertilizer, thereby improving the use efficiency of fertilizer.3. Effective calcium, magnesium, sulfur, zinc, copper, manganese, iron, the average content. High levels of calcium which effectively, should pay attention to reduction of calcium in flue-cured tobacco production of fertilizer applied. Effective average sulphur content is greater than the critical value, should pay attention to controlling sulfur in flue-cured tobacco production of fertilizer applied, prevent plant due to excess and sulfate in soil are "salf".Boron, molybdenum deficiency, can use soil application combined with foliar fertilizer for tobacco add complement.