高产玉米的无机营养规律

本文讨论了不同肥力条件下；玉米一生氮、磷、钾的积累变化和各生育期的吸收特点，表明肥力水平愈高，植株一生的吸收和积累愈稳定，且后期仍保持较强的吸肥能力，氮、磷、钾在三种肥力水平均出现两次吸收高峰；与干物质增长呈显著正相关关系。本文还分析了氮、磷、钾对各器官的分配与转移情况，并给出了玉米亩产５００公斤的营养生理指标。

THE INORGANIC NUTRITIVE REGULATION OF THE HIGH YIELD MAIZE

Under the conditions of different fertilities, the accumulation variance of N, P and K in the whole lifetime of maize and the absorption character of each growing period are discussed in this paper.And it is suggested that the higher the level of the fertility is, the more stable the absorption and the accumulation of the plant's lifetime remain, and that the stronger capacity of fertilities is still maintained in the late period and that the emergence of the two periods of the absorption peaks of the average level of each of the three fertilities of N,P and K has the obvious positive relationship with the increase of dry matter. And in addition, the distribution and the transference of N, P and K to each organ are analysed and the nutrition physiological indices of the maize yield 500kg/mu are also given in this paper.