三穗县油菜肥料利用率初探

Preliminary Study on Rape Fertilizer Utilization Efficiency in Sansui County

为验证油菜测土配方施肥的增产效果,摸清三穗县油菜氮肥、磷肥和钾肥的利用率状况而开展油菜肥料利用率田间试验。结果表明,在测土配方施肥优化栽培管理条件下(N:P:K=9:8:9)的油菜产量最高,比配方无氮、配方无磷和配方无钾、无肥分别增产41.59%、32.36%、13.83%和92.63%,在氮、磷、钾肥的配合施用情况下增产效果明显,氮肥是影响油菜产量的重要组成元素,同时磷、钾肥的施用也具有一定的增产效果。测土配方施肥优化栽培管理条件下油菜的氮、磷、钾肥料利用率为22.75%、38.64%、27.48%。

In order to verify the effect of fertilizer application on the yield of rape, the utilization rate of nitrogen fertilizer, phosphate fertilizer and potash fertilizer test was carried out in Sansui county. The results showed that the test optimization cultivation condition under fertilization （ N ： P ： K = 9 ： 8：9 ） rapeseed yield was the highest, than the formula without nitrogen, phosphorus, potassium and no fertilizer were increased by 41.59% , 32.36% , 13.83% and 92.63% ,respectively. The combined application of nitrogen, phosphor- us and potassium have obviously effect on increasing yield, nitrogen fertilizer is an important elements of rape yield, while phosphorus and potassium fertilizer application also has a certainly yield increasing effect. The utilization ratio of nitrogen, phosphorus and potassi- um fertilizer was 22.75% , 38.64% and 27.48% respectively, which was based on the optimum condition of soil testing and formula fertilization.