Effect of Long-term Fertilization on Yields and Absorption of Phosphorus and Potassium of Cucumber in Vegetable Soils in Greenhouse

Through long-term experiment in vegetable greenhouse of Shenyang Agriculture University and through the cooperation of field experimen and the chemical analysis,it was conducted to study the effects of different fertilization on the contents of phosphorus and potassium.The results were summarized as follows,the differentiation of BNK(1 000.00 g·plant-1) and ANPK(982.78 g·plant-1),APK(876.11 g·plant-1)and BN1(792.22 g·plant-1),BNP(758.33 g·plant-1) and AP(758.33 g·plant-1),AK(657.22 g·plant-1) and AN0(626.11 g·plant-1),BP(327.78 g·plant-1) and BK(313.89 g·plant-1)、BN0(297.22 g·plant-1)was indistinctively.That direct Nitrogen fertilizer and organic fertilizer had the same effect on increasing soil productivity.The yields of ANK(1 188.89 g·plant-1)and BNK(1 000.00 g·plant-1)was higher and the differentiation with others was very distinctively.This conduct that the applying of K or N-K fertilizer considerably increased the productivity.The contents of phosphorus and potassium absorbed by cucumber were closely related with and were significantly linearly correlated to the releasing contents of phosphorus and potassium.