| Effect of nitrogen nutrition on quality and yield of wheat-maize intercropping and monocropping |
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| DOI：10.7606/j.issn.1000-7601.2003.02.05 |
| Key Words: nitrogen nutrition wheat-maize intercropping sole wheat sole maize yield quality property |
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| Abstract: |
| The field experiment was designed to study effects of nitrogen application rates on yield and quality of wheat-maize intercropping and monocropping. The results indicated that wheat yield of intercropping increased with nitrogen application rate when nitrogen application rate was less than 450 kg/hm2, when nitrogen application rate was greater than 450 kg/hm2, wheat quality decreased. Under the monocropping condition, wheat quality increased when nitrogen application rate was less than 450 kg/hm2, when nitrogen application rate was larger than 450 kg/hm2, wheat yield decreased. The maize yield and quality under the monocropping condition, were the same as wheat under intercropping treatment; maize yield and quality, under the intercropping treatment were similar to wheat under monocropping. The regression analysis showed that the quality properties of both intercropped and sole wheat, maize were weakly correlated to their grain yield respectively. Under the condition of this experiment, the amount of 300 kg/hm2 nitrogen application could improved quality and yield simultaneously. |
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