吉林省大豆种植区土壤主要营养元素与大豆产量的相互关系研究

The Corelation of Soil Nutrients in Soybean-Planting Area and the Soybean Yield in Jilin Province

土壤中的营养元素是评价土壤自然肥力的主要因素之一。本文对吉林省大豆种植区土壤中的主要营养元素N、P、K的供应水平进行了分析 ,并探讨了它们与大豆产量之间关系。研究表明 :吉林省大豆种植区土壤供氮水平属于中级 ,供磷和供钾水平属于高级 ,并当土壤碱解氮 :有效磷 :有效钾接近 1∶0 .3～ 0 .4∶1.7～ 1.8时 ,大豆单产水平较高 ,为提高大豆单产。

The soil nutritious elements are the important composition of the soil fertility. The nutritious elements,N,P and K,in the Soils of planting area in Jilin Province and the correlation of the N,P,K nutrients with the soybean yield were analyzed in this paper . The study showed that the soil nitrogen fertilizer is a middle grade,While soil phosphorus fertilizer and soil potassium fertilizer are high grade.The yield of soybean is much higher when the ratio of hydrolytic-nitrogen,available phosphorous and available potassium approximates 1,0.3～0.4,1.7～1.8 respectively. This conclusion will provide a scientific basis for adequate fertilization and raising soybean yield.