| High water use efficiency mechanism of maize planting in furrows of completely mulched alternating narrow and wide ridges systems in rainfed area |
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| DOI：10.7606/j.issn.1000-7601.2010.06.22 |
| Key Words: completely mulched alternating narrow and wide ridges with furrow planting soil water WUE maize |
| Author Name | Affiliation | | HUANG Gaobao | Agronomy Faculty, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | FANG Yanjie | Agronomy Faculty, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LI Lingling | Agronomy Faculty, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | XIE Junhong | Agronomy Faculty, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Jia | Agronomy Faculty, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Soil water distribution and water use efficiency of maize in different planting patterms in semi-arid area
was studied using field experiments to clarrify high water use efficiency mechanism of maize planting in furTows of com-pletely mulched altemating narrow and wide ridges systems in rainfed area. The results showed that the average soil water content in various measureing positions was significantly different at 0.05 level; The water content in furrows is the high-est followed by the water content on big ridges , smaller ridges were the dryest in the field; The average soil water content in 0~ 60 cm depth of completely mulched alternating nartow and wide ridges with furrow planting (T4) was 14.19% higher than flat-planting without mulching at planting time; Soil water storage in 0~60 cm reaches the highest in jointing stage，which indicates T4 is beneficial for emergence and early growth of maize; Compared with half-mulching and flat-planting, yield and WUE of completely mulched altermating narrow and wide ridges with furrow planting was increased by 26.76% and 14.83% respectively. |
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