摘要： 为了经济有效地施用肥料，作者于1984年进行了旱地高产春谷需肥特性的研究。结果表明，每生产50公斤谷子需吸收氮素1.33公斤、磷素（P₂O₅）0.49公斤，其中谷子抽穗后仍需从土壤和根系中分别吸取36.5%的氮素和约60%的磷素，揭示了谷子根系活熟到老的重要生理意义。并就旱地高产条件下谷子的干物质、氮素、磷素的积累、分配和运转作了较为详细的阐述，为合理施肥和高产栽培提供了理论依据。

关键词: 旱地, 春谷, 需肥特性

Abstract: For the sake of economically and effectively applying the fertelizer,the fertilizer-requiring characterestics of high-yielding spring millet in arid land were investigated in 1984.The results indicated that 1.33kg N and 0.49kg P(P5O2)were absorbed in order to produce 50kg of millet grain,in which 36.5% N and 60% P remain to be absorbed from the soil and root system respectively after earing.The physiologic significance of ensuring the growth of millet plant to maturity by root system were revealed,and the accumulation,distribution and transportation of N,P and dry matter were expounded,thus the theoretical base for rational application of fertilizer and high-yielding planting was provided in the paper.

Key words: Arid land, Spring millet, Fertilizer-requiring characterestics