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生态学杂志 ›› 1993, Vol. ›› Issue (6): 34-36.

• 研究报告 • 上一篇    下一篇

氮磷钾肥施用对蔬菜中硝酸盐积累的数学模型

段咏新1, 付庭治2   

  1. 1. 徐州师范学院生物系, 221009;
    2.南京大学生物系, 210008
  • 收稿日期:1992-04-04 出版日期:1993-12-10

Mathematical Model on Nitrate Accumulation in Vegetable after Applying N,P and K Fertilizers

Duan Yongxin1, Fu Tingzhi2   

  1. 1. Department of Biology, Xuzhou Teacher's College, 221009;
    2. Department of Biology, Nanjing University, 210008
  • Received:1992-04-04 Online:1993-12-10

关键词: 冬小麦, 种植密度, 根系, 时空分布, 氮素利用效率

Abstract: Chinese Journal of Ecology,1993,12(6):34-36.In This paper,a regression wodel on nitrate accumulation in spirach is establised,which can predict the accumulation amount of nitrate under different application rates of N,P and K fertilizers.Using this model,the nitrate content in spirach can be controlled through fertilization,and its harmful effect on baman body can be reduced.

Key words: winter wheat, planting density, root system, spatiotemporal distribution, nitrogen use efficiency.