自然资源学报 ›› 1991, Vol. 6 ›› Issue (1): 22-33.doi: 10.11849/zrzyxb.1991.01.003

• 论文 • 上一篇    下一篇

淮北涡河流域农业自然生产潜力模型与分析

沈思渊, 席承藩   

  1. 中国科学院南京土壤研究所
  • 出版日期:1991-03-25 发布日期:1991-03-25

MODEL AND ANALYSIS OF THE NATURAL PRODUCTIVE POTENTIAL OF AGRICULTURE OF THE GUO RIVER WATERSHED IN NORTHERN ANHUI PROVINCE

Shen Siyuan, Xi Chengfan   

  1. Nanjing Institute of Soil Science, Academic Sinica
  • Online:1991-03-25 Published:1991-03-25

摘要: 根据淮北涡河流域的特点,本文以小麦—玉米一年两熟制建立光合作用、温度、水分和土壤条件对自然生产潜力影响的动态分室模型,再用阶乘模型将它们综合为农业自然生产潜力模型,并将模型计算值与实际生产情况对比分析。模型的输出结果综合反映了该区自然资源对农业生产的影响。由模型分析出影响本区农业自然生产力的当前限制因子是土壤养分,长远限制因子是土壤有机质和水分,为分阶段区域治理提供了依据。在土壤完全改良后,淮北平原的农业生产可跃上年平均亩产900kg的新水平。

关键词: 生产力模型, 农业自然生产潜力, 限制因子

Abstract: Based on the wheat-maize rotation system, compartment models of the effects of natural factors on plant growth and crop production are established. Then they are combined to form a natural productive potential model of agricultue. The output of the model shows that the potential crop yield in this region will be 14.12 tons/ha if soil conditions are improved. The present limitation of crop production is soil nutrients. The long-run limiting factors will be soil organic matter content and water supply. The problems related to soil and water resources in the region should be tackled in a comprehensive way and by stages.

Key words: productivity model, natural productive potential of agriculture, limiting factor