白菜型冬油菜配方施肥研究

Study on the Formulated Fertilization of Brassica campestris L.

2010年在天水市秦州区进行了冬油菜"3414"试验,结果表明,冬油菜产量随氮、磷、钾单因素肥料施入量的增加呈先增产后减产趋势,以氮肥增产效果最好,增产率4.61%。通过建立冬油菜产量与N、P、K施肥量回归方程,得出最大施肥量为N 172.5 kg/hm2、P2O581.6 kg/hm2、K2O 141.6 kg/hm2,冬油菜产量为3 060.60 kg/hm2;最佳施肥量为N 83.7 kg/hm2、P2O527.3 kg/hm2、K2O 25.8 kg/hm2,冬油菜产量为2 862.75 kg/hm2。

The 3414 experimental ofBrassica campestris L. was studied in Qinzhou District in 2010. The results showed that the yield of Brassica campestris L. was first increased and then decreased trend with application amount of nitrogen, phosphorus, potassium single factor fertilizer increase, stimulation effect of was best nitrogen was best and the increasing rate was 4.61%. Through the establishment of winter rapeseed yield and N, P, K fertilizer levels regression equation, the largest of fertilizer was N 172.5 kg/hm2, P205 81.6 kg/hm2 and K2O 141.6 kg/hm2, the yield of Brassica c.ampestris L. was 3 060.60 kg/hm2. Optimal fertilization was N 83.7 kg/hm2, P2O5 27.3 kg/hm2 and K2O 25.8 kg/hm2, the yield of Brassica campestris L was 2 862.75 kg/hm2.