碧江区坝黄镇油菜氮磷钾肥料利用率研究

为了摸清油菜氮肥、磷肥、钾肥的利用率情况,为测土配方施肥提高油菜氮肥、磷肥、钾肥利用率的效果提供依据,特在碧江区坝黄镇开展了油菜氮磷钾肥料利用率试验,结果表明,缺氮区产量最低,其次是缺磷、缺钾区,说明油菜产量受氮、磷、钾肥缺失的影响明显,氮肥缺失比磷、钾肥大一些,从肥料利用率结果可知,常规施肥氮、磷、钾肥的利用率分别为34.65%、16.98%、21.43%,配方施肥氮、磷、钾肥的利用率分别为63.51%、30.73%、51.3%,氮、磷、钾肥的利用率分别提高28.86%、13.75%、29.87%。可见配方施肥可有效提高油菜产量,而且节约成本。

In order to understand the utilization situation of rape nitrogen fertilizer, phosphate fertilizer, potash, for measuring soil fertilizer increased rape provides the reference for the effect of nitrogen fertilizer, phosphate fertilizer, potash fertilizer utilization, especially in huang jiang district dam was carried out by rape NPK fertilizer efficiency test, the results showed that yields the lowest nitrogen deficiency area, the second is the lack of phosphorus and potassium deficiency area, that rape yield affected by lack of n, p, k, p and k fertilizers nitrogen loss than larger, from fertilizers result shows that conventional fertilization of nitrogen, phosphorus and potassium fertilizer utilization ratio are 34.65%, 16.98%and 34.65%respectively, formula fertilization of nitrogen, phosphorus and potassium fertilizer utilization rate of 63.51%, 30.73% and 51.3%, respectively, n, p, k use efficiency increased by 28.86%, 13.75%and 29.87% respectively. Visible fertilizer can effectively increase the rape yield and cost savings.