Fertilizer on wheat yield and nutrients uptake characters of dry land in different precipitation years

【Objective】The relationship between precipitation,fertilization,wheat yield and nutrients uptake were investigated to propose a rational way of fertilization under different precipitation years.【Method】Based on a long-term fertilizer experiment with fixed site on continuous wheat in Changwu,Shaanxi Province,the effect of long-term different fertilizer application,the wheat yield and nutrients uptake characters were compared with the treatment of no fertilizer(CK).Different fertilizer treatments were unfertilized nitrogen+phosphorus+manure(NPM),nitrogen+phosphorus(NP),manure(M),nitrogen(N),and phosphorus(P).【Result】The result showed that the combination of N,P and manure applied together increased the yield largest.The yield increased from 258.9% to 300.0%,single applying M increased the yield by 172.4%,211.1% and 262.2% in drought annual,normal annual and wet annual;Under different precipitation years,the average of N,P,K uptake are highest when N,P and M applied together,annual N,P,K uptake of wheat seed of M fertilizer in wet years are 85.0%,84.8%,40.6% higher than N and P applied together.【Conclusion】Under different precipitation years,rational use of chemical fertilizer can increase wheat yield in a large scale.Fertilizer M can increase the nutrients uptake of wheat largely.