| Study on maize optimal cultivation measures under bed-irrigating sowing condition in semiarid area |
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| DOI：10.7606/j.issn.1000-7601.2009.01.15 |
| Key Words: maize bed-irrigating sowing high-yielding cultivation semiarid area |
| Author Name | Affiliation | | FENG Liangshan | College of Agronomy Shenyang Agricultural University,Shenyang,Liaoning 110161,China；Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161,China | | SUN Zhanxiang | Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161,China | | CAO Minjian | College of Agronomy Shenyang Agricultural University,Shenyang,Liaoning 110161,China | | HOU Zhiyan | Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161,China | | HUI Chengzhang | Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161,China | | LIU Yang | Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161,China | | LI Jinfeng | Shenyang Academy of Agricultural Sciences,Shenyang,Liaoning 110034,China |
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| Abstract: |
| The effects of water amount, nitrogenous fertilizer, phosphate fertilizer, potasium fertilizer and density in maize bed-irrigating sowing were studied through the design of 5-factor (1/2) orthogonal regression rotational combination.The weighing on effect of yield in different factors was nitrogenous fertilizer>water amount≈phosphate fertilizer>potasium fertilizer>density.When all factors at low-level, the yield-increasing rate at beginning was phosphate fertilizer>nitrogenous fertilizer>water amount>potasium fertilizer>density.Along with the level of factors heightened, the yield-increasing rate was inching down, the velocity sequence was phosphate fertilizer>density≈nitrogenous fertilizer>water amount>potasium fertilizer.When the water amount was 46.25 t/hm2, the nitrogenous fertilizer (N) was 327.68 kg/hm2, the phosphate fertilizer (P2O5) was 149.10 kg/hm2, the potasium fertilizer (K2O) was 189.24 kg/hm2, the density was 71 172.00 plants/hm2, the tiptop yield was 14 059.62 kg/hm2.The optimal cultivation measures for yield above 10 560 kg/hm2 were as follows: the water amount of 41～54 t/hm2, the nitrogenous fertilizer (N) of 276～348 kg/hm2, the phosphate fertilizer (P2O5) of 145～165 kg/hm2, the potasium fertilizer (K2O) of 166～217 kg/hm2, the density of 64 728～72 726 plants/hm2. |
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