Abstract:

Zhengzhou 450002 ;Agricultural Technique and Popularization Center in Huangchuan, Henan Xinyang 465150) Abstract:17-year-long-term fertilization experiments with 9 w heat varieties (Yumai 13, Zhengtaiyu1, Linfen 7203, Zhengzhou 941, Yumai 47, Zhengzhou 8998, Zhengmai 9023，Zhengmai 9694,Zheangmai9962) in Fluvo-aquic soil were conducted in research farm in Henan Academy of Agricultural Sciences.The effects of different fertilzatiaon treatments on grain yield and yield components were studied. The results showed follows:（1）N and P were two crucial limited factors to grain yields and growth of wheat, however, K was not. (2)The grain yields,ears and Grains (per ear) of NP and NPK treatments were better than the other treatments significantly. (3)For the stability of grain yield, NPK>PK>NP>CK>N>NK. (4) Grain yields of NPK and NP treatments were positively related to number of ears and 1000-grain weight. Grain yields of NK and N treatments were positively related to all the three component factors. Grain yields of CK and PK treatments were only positively related to grains.