黄冈市黄州区油菜“3414”肥效试验

摘要

油菜施用氮、磷、钾“3414”肥效试验结果表明：在黄州区当地试验条件下，合理的氮、磷、钾肥施用量可显著提高油菜产量，施肥不足或过量会导致油菜产量的降低。回归分析结果表明，当纯氮、五氧化二磷、氧化钾的施用量分别为202.5、45.0、81.0 kg/hm2时，最高产量为2785.9 kg/hm2；当纯氮、五氧化二磷、氧化钾的施用量分别为174.8、42.8、45.6 kg/hm2时，最佳经济产量为2763.5 kg/hm2。%′3414′fertilizer efficiency experiment of rape was carried out the in Huangzhou District. The results showed that under the local experimental conditions of Huangzhou District ,reasonable applying amount of N ,P2O5 and K2O could significantly improve the rape yield ,inadequate or excessive fertilization would decrease rape production. The results of regression analysis showed that ,the maximum yield reached 2 785.9 kg/hm2 when application doses of N,P2O5 and K2O were 202.5,45.0,81.0 kg/hm2 respectively. The best economic yield was 2 763.5 kg/hm2 when application doses of N,P2O5 and K2O were 174.8,42.8,45.6 kg/hm2 respectively.