| 夏季种植甜玉米减少果类菜田土壤氮素损失的效果 |
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| 引用本文： | 赵小翠,姜春光,袁会敏,陈清,王倩.夏季种植甜玉米减少果类菜田土壤氮素损失的效果[J].北方园艺,2010(15):194-196. |
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| 作者姓名： | 赵小翠 姜春光 袁会敏 陈清 王倩 |
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| 作者单位： | 中国农业大学,农学与生物技术学院,北京,100093;中国农业大学,资源与环境学院,北京,100093 |
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| 基金项目： | 国家科技支撑计划资助项目，果类蔬菜产业技术体系北京市创新团队资助项目 |
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| 摘 要： | 研究冬、春茬番茄收获后种植夏季填闲甜玉米对土壤剖面无机氮含量及氮素损失的影响,以解决我国北方设施果类蔬菜生产中夏季休闲期较长,夏季土壤氮素矿化强烈,无机氮积累严重,下茬定植前后大水漫灌容易导致淋洗损失等问题。结果表明:在夏季期间没有任何肥料投入和灌溉,甜玉米生长状况良好,其生物量鲜重达66.7 t/hm2,干物质累积为5.9 t/hm2,玉米穗净鲜重达7.5 t/hm2,农民净收入达8 000元/hm2;甜玉米地上部可带走土壤氮素128.1 kg/hm2,减少土壤无机氮累积数量403.1 kg/hm2,从而减少氮素损失风险。夏季种植玉米不仅可以减少氮素损失,而且其根茬还田作为一个很好的碳源补充,改善菜田土壤环境,提高菜田土壤生物肥力。
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| 关 键 词： | 设施番茄 夏季填闲 甜玉米 氮素损失 |
Effect of Summer Sweet Corn Planting on the Reduction of Soil N Loss in Greenhouse Vegetable Field |
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| ZHAO Xiao-cui,JIANG Chun-guang,YUAN Hui-min,CHEN Qing,WANG Qian.Effect of Summer Sweet Corn Planting on the Reduction of Soil N Loss in Greenhouse Vegetable Field[J].Northern Horticulture,2010(15):194-196. |
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| Authors: | ZHAO Xiao-cui JIANG Chun-guang YUAN Hui-min CHEN Qing WANG Qian |
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| Institution: | ZHAO Xiao-cui1,JIANG Chun-guang2,YUAN Hui-min2,CHEN Qing2,WANG Qian1(1.College of Agriculture and Biotechnology,China Agricultural University,Beijing 100193,2.College of Resources and Environmental Sciences,Beijing 100193) |
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| Abstract: | The fallow period is relatively long in the greenhouse fruit vegetable production of North China.Because of strong nitrogen net mineralization and nitrate accumulation in summer fallow period,nitrogen leaching losses easily occur due to excessive irrigation at transplanting in the autumn.In this paper,sweet corn as N-catch crop was planted in summer after winter-spring tomato was harvested in order to study the effect on soil nitrogen loss in fruit vegetable field.The results indicated that sweet corn could... |
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| Keywords: | greenhouse tomato catch crop sweet corn nitrogen loss |
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