中文摘要：

采用大田小区试验,研究了12种氮磷钾配比对湘杂油763籽粒产量和氮磷钾吸收的影响.结果表明,在其余肥料施用量一致的情况下,较高的施氮比例或较高的施磷比例处理,油菜都有较高的产量,而施钾比例对产量的影响没有一致的规律;氮素和磷素积累量分别随着氮肥和磷肥施用比例的增加而增加,而钾素积累量没有显示出以上规律;氮磷钾3种肥料的利用率均随施用量的增加而呈减少趋势,钾肥利用率的减少幅度最大,氮肥减少幅度最小.12种氮磷钾配比中,N、P2O5、K2O质量比为1：0.5：0.58的油菜籽粒产量最高,为1830kg/hm^2,其次是1：0.5：0.88,为1800kg/hm^2,1：0.4：1.4的油菜籽粒产量最低,为1350kg/hm^2.

英文摘要：

Field experiments were conducted to investigate the effects of different NPK ratio on yield and NPK uptake of Xiangzayou 763.The results showed that under the same amount of other fertilizers either with the higher nitrogen ratio or higher phosphorus ratio treatments a higher rapeseed yield could be obtained while the proportion of potassium application had no regular consensus under the same amount of other fertilizers.The accumulative amount of NPK in plant were correspondingly increased as the proportion of nitrogen and phosphorus fertilizer increased,while the accumulation of K as that;The tendency of NPK fertilizer utilization rates were all decreased with the increasing usage of the same kind of fertilizer,the sharpest decline appeared in the utilization of potassium,the smallest reduction appeared in nitrogen utilization.Among the twelve kind of tested NPK ratio,the highest rapeseed yield appeared in the proportion of N：P2O5：K2O=1：0.5：0.58,which reached 1 830 kg/hm^2,followed by the N：P2O5：K2O = 1：0.5：0.88,which reached 1 800 kg/hm^2,the lowest rapeseed yield appeared in N：P2O5：K2O = 1：0.4：1.4,which was only 1 350 kg/hm^2.