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2007—2009年度在海门市进行了油菜3414肥料效应试验。结果表明:海门市油菜产量与氮、磷、钾肥用量之间呈三元二次回归效应关系,2007—2008年度和2008—2009年度试验点综合肥料效应方程分别为:y2007-2008=98.220+4.876N-0.231N2+13.399P-1.748P2+6.346K-0.621K2+0.377NP+0.126NK+0.090PK和y2008-2009=110.352+7.636N-0.311N2+7.178P-0.929P2+3.923K-0.550K2+0.152NP+0.175NK+0.173PK。平均每千克养分增产油菜籽分别为:N 5.36 kg,P2O57.78 kg,K2O 4.14kg;N+P2O53.74 kg,N+K2O 2.83 kg,P2O5+K2O 2.18 kg,N+P2O5+K2O 3.85 kg。
2007-2009 in Haimen conducted rape 3414 fertilizer effect test. The results showed that there was a ternary quadratic regression relationship between the yield of rapeseed and nitrogen, phosphorus and potassium fertility in Haimen. The comprehensive fertilizer effect equations of 2007-2008 and 2008-2009 were as follows: y2007-2008 = 98.220 + 4.876 N-0.231N2 + 13.399P-1.748P2 + 6.346K-0.621K2 + 0.377NP + 0.126NK + 0.090PK and y2008-2009 = 110.352 + 7.636N-0.311N2 + 7.178P- 0.929P2 + 3.923K-0.550K2 + 0.152NP + 0.175NK + 0.173PK. The average yield of rapeseed per kilogram of nutrients was: N 5.36 kg, P2O57.78 kg, K2O 4.14 kg; N + P2O53.74 kg; N + K2O 2.83 kg; P2O5 + K2O 2.18 kg; N + P2O5 + K2O 3.85 kg.