施锌对玉米氮磷钾肥料利用率、产量及籽粒品质的影响

Effect of zinc on fertilizer utilization rates of nitrogen，phosphorus and potassium ，grain yield and quality in maize

摘要: 施用ZnO 4．2kg／hm² 对玉米N、K 元素的吸收利用存在极显著协和作用，可分别提高N、K 肥料利用率35．84％和141．07％，增产7．63％，籽粒蛋白质、脂肪、淀粉和全糖含量分别增加5．63％、5．37％、2．69％和2．29％。zn对P的吸收利用是拮抗作用，施zn肥显著降低P肥利用率。

Abstract: The application of ZnO 4．2kg／hm² has a very obvious synergism function on N and K absorption and utilization of maize，and can increase the fertilizer utilization rates of N and K by 35．84％ and 141．07％ respectively．thus increasing the yield by 7．63％，and can also enhance the contents of protein，fat，starch and total sugar in corn grain by 5．63％，5．37％，2．69％ and 2．29％ respectively．Zn has an antagonistic action on P absorption and utiliza tion．and decreases P utilization rate．