| 灌溉对粮饲兼用玉米根系分布及产量影响 |
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| 引用本文： | 潘菊梅,李辛村,李涛,齐广平.灌溉对粮饲兼用玉米根系分布及产量影响[J].干旱区资源与环境,2012(11):200-203. |
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| 作者姓名： | 潘菊梅 李辛村 李涛 齐广平 |
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| 作者单位： | 甘肃农业大学工学院;甘肃农业大学农学院;甘肃农业大学草业学院 |
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| 基金项目： | 博士后基金项目;现代农业产业技术体系建设专项资金资助 |
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| 摘 要： | 通过大田试验,在灌溉量2700m3/hm2、3600m3/hm2、4500m3/hm2条件下,对粮饲兼用玉米根系分布特征及产量影响进行了研究。结果表明:1)3600m3/hm2的灌溉量在0～40cm土层的土壤含水率较充分灌溉显著提高4.78%～19.3%;2)各灌溉条件下,根系随生育进程不断向下发展,随灌溉量的减少,根系有向深层发展的趋势;3)3600m3/hm2的灌溉条件下,粮饲兼用玉米籽粒产量较充分灌溉显著提高11.3%;4)秸秆产量在充分灌溉条件下较高,尤其在抽雄至乳熟期达到最高。
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| 关 键 词： | 粮饲兼用玉米 土壤水分 根系分布 产量 |
The effect of irrigation amounts on root distribution and yield of forage maize |
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| PAN Jumei,LI Xincun,LI Tao,QI Guangping.The effect of irrigation amounts on root distribution and yield of forage maize[J].Journal of Arid Land Resources and Environment,2012(11):200-203. |
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| Authors: | PAN Jumei LI Xincun LI Tao QI Guangping |
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| Institution: | 1,3(1.College of Engineering,Gansu Agricultural University,Lanzhou,730070 P.R.China; 2.College of Agronomy,Gansu Agricultural University,Lanzhou,730070 P.R.China; 3.College of Pratacultural Science,Gansu Agricultural University,Lanzhou,730070 P.R.China) |
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| Abstract: | The effect of root distribution trait and yield of forage maize were studied in the field experiment under the irrigation amounts of 2700m3/hm2,3600m3/hm2,4500m3/hm2.The results showed that 1)The soil moisture within 0-40cm soil layer was improved markedly by 4.78%-19.3% under 3600m3/hm2 compared with full irrigation;2) For all irrigation amounts,the roots grew downward continuously with the development process.When the irrigation amount was reduced,the root system showed the trend of developing downward;3)Under the irrigation amount of 3600m3/hm2 the grain yield of forage maize was improved by 11.3% compared with full irrigation;4) The straw yield was higher under the full irrigation amount.Especially,the straw yield was the highest from tasseling stage to milk stage. |
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| Keywords: | forage maize soil moisture root distribution yield |
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