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生态学杂志 ›› 1993, Vol. ›› Issue (2): 69-72.

• 研究报告 • 上一篇    下一篇

鲁西北平原高产夏玉米生育模式

董振国, 鲁全国   

  1. 中国科学院地理研究所, 北京100101
  • 出版日期:1993-04-10
  • 基金资助:
    黄淮海平原农业综合开发专题研究

Development MOdel of High Yielding Summer Corn on Nortbwest Skandong Plain

Dong Zhenguo, Lu Quanguo   

  1. Institute of Geography, Chinese Academy of Sciences, Beijing 100101
  • Online:1993-04-10

关键词: 间套作, 农田, 水分利用效率, 节水机理, 资源利用

Abstract: Erect and plane varieties of corn have a leaf inclination of 65癮nd 50癮nd their optimum planting densitiesare 75000-82000 and 52500-60000 stems穐a-1.The leaf area index at ear sprouting stage and leaf area day(LAD) for the former are respectively 5.5-6.0 and 360-400,while those for the latter are 3.5-4.0 and 260-300. The LAD ratioes are found to be 3.8,28.1%,58.6% and 11.3% in intervals from emergence to elongation stage,elongation to ear sprouting stage,ear sprouting to milk stage and milk to mature stage with optimum mass structure of the crop.

Key words: intercropping system, cropland, water use efficiency, water-saving mechanism, resources utilization.