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作物学报 ›› 1986, Vol. 12 ›› Issue (02): 109-116.

• 研究论文 • 上一篇    下一篇

黄淮海地区—熟与两熟制生产力的研究

韩湘玲;刘巽浩;孔扬庄

  

  1. 北京农业大学

  • 收稿日期:1985-04-22 修回日期:1900-01-01 出版日期:1986-05-12 网络出版日期:1986-05-12

STUDIES ON THE PRODUCTIVITY OF SINGLE AND DOUBLE CROPPING IN HUANG-HUAI-HAI PLAIN

Han Xiangling,Liu Xunhao,Kong Yangzhong   

  1. Beijing Agricultural University
  • Received:1985-04-22 Revised:1900-01-01 Published:1986-05-12 Published online:1986-05-12

摘要:

1980~1984年试验得出,在黄淮海平原水浇地以及降水较多的黄淮平原旱地,一年两熟比一年一熟生产力高近1倍,经济效益与能转换效率也高。高产的一年两熟制从土壤中成倍地取走养分,但有机质源却增加更多。试验发现,在低水肥、低叶面积系数情况下,叶面积与产量相关密切,在生产上应主攻单产,不要过多提高复种指数;而在高水肥、高叶面积系数情况下,产量与叶面积相关不显著,而与光合时间相关密切,故应主攻光合时间,在生长季节允许的地方,实行一年多熟。

Abstract:

Studies on the productivity of single and double cropping were madeduring the period from 1980 to 1984 on both irrigated and rainfed fieldsin three places of Huang-Huai-Hai plain.The results obtained are asfollows.On irrigated fields of Huang-Huai-Hai Plain and on rainfed areasin the southern part of this plain where rainfall is abundant,the prod-uctivity of double cropping almost doubled that of single cropping,andthe economical income,energy’s efficiency increased remarkably as well.The removal of nutrien...

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