nitrogen distribution meaning in Chinese

氮质分布, 氮质分配

Effect of soil water stress on nitrogen distribution , utilization and yield in winter wheat
土壤水分胁迫对冬小麦氮素分配利用及产量的影响
Effects of soil thickness on nitrogen distribution and utilization and yield in dry land wheat
土层厚度对旱地小麦氮素分配利用及产量的影响
Effect of mineral nitrogen distribution in soil profiles on nitrogen use of flue - cured tobacco under different application methods
不同施肥土壤中无机氮的垂直分布及烤烟对氮素的利用