Study on Fertilizer Effect of Spring Oilseed Rape under Different Fertilizer Amount by Mulching Plastic Film

[Objective]The research aimed to study fertilizer effect of spring oilseed rape under different fertilizer amount by mulching plastic film.[Method]By using mulching plastic film,a small plot experimentation of spring oilseed rape was carried on in the eastern agricultural area of Qinghai Province.[Result]The results showed that the yield of each treatment by mulching plastic film has a markedly improvement than CK without mulching plastic film,and has a significant differences with CK.[Conclusion]Planting pattern by mulching plastic film could optimize yield characters of spring oilseed rape,eventually raise the yield level at large amplitude,so it is a cultivation measure that should be vigorously promoted.