| Effects of different coverage cultivation and balanced fertilization on yield and water use efficiency of spring corn in the dryland |
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| DOI：10.7606/j.issn.1000-7601.2014.04.030 |
| Key Words: plastic-film mulched double-furrow sowing cultivation balance fertilization water use efficiency spring corn yield |
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| Abstract: |
| Field trials were conducted to study the effect of mulching cultivation and balance fertilization on yield and water use efficiency of corn in the dryland. The results showed that film mulched double-furrow sowing had a favorable effect on carbohydrate synthesis and thereby the dry matter accumulation of corn, with the balance pattern of fertilization having the largest effect. Compared with all-film double-furrow sowing cultivation, maize yields of semi-film covering cultivation and exposed land cultivation was reduced by 8.5%～17.6% and 61.1%～95.3%, and water use efficiency of which was reduced respectively by 3.5%～15.1% and 52.8%～60.2%, respectively. The application rate
of N 225 kg·hm-2, P2O5 120 kg·hm-2, and K2O 60 kg·hm-2 resulted in the highest maize yield and water use efficiency, suggesting the
feasibility of balance fertilization in plastic-film mulched double-furrow sowing pattern. |
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