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近几年来,不少学者对棉花和小麦的氮肥吸收利用问题作了大量的研究,提出了一些适合不同地区的有效的氮肥施用方法。关于棉麦两熟一个轮作周期中氮肥去向的研究却很少有人报导。本研究应用~(15)N 稳定性同位素示踪的方法,探讨了棉麦两熟一个轮作周期中两季作物所施氮肥的去向及其对作物产量的影响。为指导棉麦两熟栽培中氮肥的合理施用提供了一定
In recent years, many scholars have made a great deal of research on the nitrogenous fertilizer utilization of cotton and wheat and put forward some effective methods for applying nitrogenous fertilizer to different regions. Few reports have been reported on the fate of nitrogen fertilizers in a rotation cycle of cotton and wheat. In this study, ~ (15) N stable isotope tracing method was used to investigate the fate of nitrogen fertilizers and their effects on crop yield in two cropping crops during one cropping cycle of cotton and wheat. In order to guide cotton and wheat cultivation in two nitrogen fertilizer provided a reasonable application