| 沙地不同施肥量对玉米产量形成的影响 |
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| 引用本文： | 张铜会,赵学勇.沙地不同施肥量对玉米产量形成的影响[J].中国沙漠,1999,19(Z1):124-126. |
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| 作者姓名： | 张铜会 赵学勇 |
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| 作者单位： | 中国科学院兰州沙漠研究所, 兰州 730000 |
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| 基金项目： | 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 |
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| 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%。
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| 关 键 词： | 玉米 施肥量 科尔沁沙地 |
Effect of Various Amounts of NP Fertilizers on Yield of Spring Corn at Sandy Cropland |
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| ZHANG Tong-hui,ZHAO Xue-yong.Effect of Various Amounts of NP Fertilizers on Yield of Spring Corn at Sandy Cropland[J].Journal of Desert Research,1999,19(Z1):124-126. |
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| Authors: | ZHANG Tong-hui ZHAO Xue-yong |
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| Institution: | Institute of Desert Research, Chinese Academy of Sciences, Lanzhou 730000, China |
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| 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. |
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| Keywords: | Corn NP fertilizers Horqin Sandy Land |
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