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中国沙漠 ›› 1999, Vol. 19 ›› Issue (s1): 124-126.

• 论文 • 上一篇    下一篇

沙地不同施肥量对玉米产量形成的影响

张铜会, 赵学勇   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 出版日期:1999-12-31 发布日期:1999-12-31
  • 基金资助:
    本文得到96-920-13-02、49890330、980121、KE-952-91-218、KE-95 T-04-01-04项目的资助

Effect of Various Amounts of NP Fertilizers on Yield of Spring Corn at Sandy Cropland

ZHANG Tong-hui, ZHAO Xue-yong   

  1. Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000, China
  • Online:1999-12-31 Published:1999-12-31

摘要: 对沙地玉米进行不同施肥量的试验研究。结果表明,试验条件下在沙地增加施肥量特别是N肥可显著增加玉米的产量,增幅达14.2%~73.8%,而增施P肥则对产量增加不显著;玉米产量与施肥量显著相关,相关系数为0.827;同时随着沙地玉米产量的增加,其水分利用率也明显提高,增幅达13.5%~70.8%。

关键词: 玉米, 施肥量, 科尔沁沙地

Abstract: The experiment was designed at four levels of P (75 kg·hm-2, 112.5 kg·hm-2, 150 kg·hm-2 and 187.5 kg·hm-2) for base fertilizer and at three levels of N (300 kg·hm-2, 450 kg·hm-2 and 600 kg·hm-2) for top application in spring corn field. There were 12 treatments in total and 36 plots with each treatment re application three times. Each plot was 4 m 2. The results showed that corn grain yield increased significantly for all treatments as N increased, but insignificantly for P; the water consumption of corn also increased from 476.1 mm to 488.4 mm along with the grain yield increasing. A mathematical model composed of the fertilizer and the water consumption is as follows: Y=154.1X1+5.26X2-67896.5, r=0.753.

Key words: Corn, NP fertilizers, Horqin Sandy Land

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