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不同品种的氮肥,对作物生长发育所产生的影响也不同。因作物和肥料品种特性而分配适宜的氮肥品种是合理施肥的组成部分。笔者于1989年试验了在等氮量条件下,常用的几种氮肥对甘肃省河西灌区甜菜块根产量和质量的影响,以筛选出当地最适用的氮肥品种,为生产提供施肥理论依据。此外,由于人们长期以来认为甜菜是“忌氯”作
Different varieties of nitrogen fertilizer, crop growth and development have different effects. The allocation of suitable nitrogenous fertilizer varieties due to the characteristics of crop and fertilizer varieties is an integral part of fertilization. In 1989, the author tested the effects of several nitrogenous fertilizers on the yield and quality of beet root tuber in Hexi Irrigation Area of Gansu Province under the condition of isobaric nitrogen so as to screen out the most suitable nitrogenous fertilizer varieties in the region and provide theoretical basis for fertilization. In addition, because people have long believed that sugar beet is “to avoid chlorine” for