Abstract:Over a 25year period,we analysed the effects of grain yield and phosphorus physiological efficiency of different wheat cultivars to soil fertility levels.The results proved that the grain yield of wheat increased significantly with the succession of wheat varieties under different fertilization treatments.The grain yield of Zhengmai 0856 was the highest(8 157.3 kg·hm-2),Zhengmai 7698 was the second,and Yumai 13 was the lowest(5 915.39 kg·hm-2).In the absence of fertilizer treatment(CK),grain yield was decreased.The phosphorus requirement for producing 100 kg wheat grain showed an increasing trend with cultivar evolution regardless of the level of soil fertility.In addition,phosphorus physiological efficiency increased first and then decreased with the replacement of varieties.The phosphorus physiological efficiency of Zhengmai 941(172.48 kg·kg-1)was the highest,Zhengmai 9023(145.79 kg·kg-1),Zhengmai 7698(130.51 kg·kg-1)and Zhengmai 0856(147.65 kg·kg-1)took the second place,and that of Yumai 13(66.71 kg·kg-1)was the lowest.The phosphorus physiological efficiency of wheat with single fertilizer application(NPK)was significantly higher than that of other fertilizer treatments(MNPK,15MNPK and SNPK)except for Yumai 13.The evolution of varieties obviously improved phosphorus agronomic efficiency.But it reduced with the fertilizer and nutrient increasing under the condition of fertilization for Yumai 13,Zhengmai 941,Zhengmai 7698 and Zhengmai 9023.Agricultural efficiency and grain yield synergized for Zhengmai 0856 and increased with soil fertility increasing.Therefore,when the soil fertility was sufficient,the grain yield and phosphorus efficiency of wheat varieties in HuangHuaiHai area increased significantly.