| Effect of regulated deficit drip irrigation on growth characteristic and yield of plastic-film-mulched corn for seed |
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| DOI：10.7606/j.issn.1000-7601.2009.02.22 |
| Key Words: egulated deficit drip irrigation corn for seed yield |
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| Abstract: |
| The method of the field culture of drip irrigation with plastic film mulching was adopted in this experiment,and three levels(75%,60% and 45% of soil saturation contains water) were designed in seedling to jointing stage,jointing to tasseling stage,tasseling to filling stage and filling to maturing stage of corn.The results showed that drought stress restrained leaf area and plant height of corn,and the yield was seriously affected in jointing to tasseling stage;In tasseling to filling stage,owing to water stress on corn,the yield was affected because fewer of the grains of panicle and light of 1000-grain weight.The effects of water stress on yield of corn for seed were not evident in filling to maturing stage,but continuance or alternation water stress on the number of leaf and the yield of corn were significant.Therefore,the soil moisture-controlling mode of drip irrigationg corn was proposed to achieve water-saving and high-yielding,which means supply enough water to corn in jointing to filling stage,decrease water supply and maintain appropriate water deficit in filling to maturing stage. |
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