| Effect of wheat/maize intercropping and nitrogen fertilizer on water use |
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| DOI：10.7606/j.issn.1000-7601.2007.04.34 |
| Key Words: wheat/maize intercropping N fertilizer soil water content water use |
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| Abstract: |
| Effect of 6 varieties of wheat intercropped with maize at two nitrogen rate in Hexi corridor of Gansu province on water use were discussed, the results showed that soil water content of intercropped wheat were higher than that of solecropped, and soil water content of intercropped maize were lower than that of solecropped after wheat harvest, soil water content of intercropped maize were higher than that of solecropped after maize harvest, but soil depth were different with various wheat varieties. With no nitrogen application, water use (WU) by 6 varieties of wheat/maize intercrops relative to sole crops were decreased by 4.82%～8.79%. Water use efficiency (WUE) by wheat of 171 /maize intercrops relative to sole crops were increased by 9.25%, yet the other varieties of wheat/maize intercrops relative to sole crops were decreased by 2.30%～15.06%. At 300 kg/hm2 nitrogen rate，WU by 6 varieties of wheat/maize intercrops relative to sole crops were decreased by 1.09%～6.96%, WUE by 6 varieties of wheat/maize intercrops relative to sole crops were increased by 10.76%～29.56%. |
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