The Effect Of Fertilization On Yield And Quality Of Oil Sunflower In Salted Soil Of Ningxia

Using the method of combining with field trial and test analysis, in salted soil of the northern of Ningxia. a nitrogen(N), phosphorus(P205) and potassium(K20) fertilizer experiment of oil sunflowers was set, to explore the influence of different ratio of NPK fertilizer on dry matter accumulation of oil sunflowers, nutrient absorption and accumulation, the yield and quality etc. For it can provide scientific evidence for regulating and controlling of fertilization in the salted soil and enhancing the yields and quality of oil sunflowers. The results show that, in the salted soil, the plant which been disposed by NPK fertilizer shows more advantages, the 1000-grain weight、fruit quantity of each oil sunflower and yield per plant and hectare all increased markedly. Treatment of adding the organic fertilizer on the basis of NPK fertilizer can also increase the amount of NPK absorption significantly. At the same time, the apply of NPK fertilizer would increased the fat content and reduced the protein, also it can increasing the oleic acid and stearic acid, reducing the content of linoleic acid and palmitic acid. The needs of nitrogen(N), phosphorus(P2O5) and potassium(K2O) absorption of oil sunflower seeds are averagely6.1～9.6kg,3.2～3.8kgand 12.3～13.7kg,1:0.49:1.79 averagely in ratio.