Title: Study on Fertilizer Effect of "3414" Experimentation for Spring Oilseed Rape in Eastern Qinghai Province
Abstract: [Objective] The study aimed to confirm the optimum ratio of N,P and K for spring oilseed rape in agricultural area in eastern Qinghai Province and provide the scientific basis for formula fertilization of spring oilseed rape.[Method] With Qingza 2 as the test variety of spring oilseed rape,14 treatments of formula fertilization with 3 factors and 4 levels were set up by using the optimum 3414 regress design recommend by Agricultural Ministry to conduct the experiment of the ratio of N,P and K for spring oilseed rape.[Result] Among 14 treatments of formula fertilization,N2P3K2(N 101.25 kg/hm2,P2O5 112.80 kg/hm2,K2O 45.00 kg/hm2)got highest yield of 3 802.50 kg/hm2,the next was N2P2K0(N 101.25 kg/hm2,P2O5 75.15 kg/hm2,K2O 0 kg/hm2)with yield of 3 735.00 kg/hm2.Through the fertilizer effect of 3414 experimentation,the fertilizer function equation for spring oilseed rape in eastern Qinghai Province was obtained and according to this mathematical model,the best NPK fertilizer amount on the theory was gained as N 128.60 kg/hm2,P2O5 90.60 kg/hm2,K2O 55.10 kg/hm2,with the best yield of 3 471.50 kg/ hm2.[Conclusion] Comprehensively analyzing the recommended fertilizer recommendation with different fertilization methods,and combining the actual agricultural production in eastern Qinghai province,it was suggested that the recommended fertilizer amount of NPK fertilizer were N 120.00 kg/hm2,P2O5 90.00 kg/hm2 and K2O 50.00 kg/hm2 resp.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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