| 优化灌溉与施肥对冬小麦冠层结构的影响研究 |
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| 引用本文： | 范仲学,王 璞,梁振兴,MARION Boening Zilkens,WILHELM Claupein.优化灌溉与施肥对冬小麦冠层结构的影响研究[J].中国生态农业学报,2005,13(1):79-81. |
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| 作者姓名： | 范仲学 王 璞 梁振兴 MARION Boening Zilkens WILHELM Claupein |
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| 作者单位： | 中国农业大学资源与环境学院植物营养系 北京100094
(王芳)，中国农业大学资源与环境学院植物营养系 北京100094(王敬国) |
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| 基金项目： | 国家高技术发展 (863 )计划项目“可控环境下蔬菜生育障碍防治技术与配套产品”(2 0 0 1AA2 470 3 1)资助 |
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| 摘 要： | 盆栽试验研究连作对茄子苗期生长的影响结果表明 ,生长初期 4 5d内重茬茄苗株高、叶面积、主根长和总根长明显低于正茬 ,导致茄苗地上部、地下部鲜物质量分别比正茬减少 33 2 %和 30 2 % ,且重茬茄苗随苗龄的增加其根结线虫危害加重。对重茬土壤消毒虽消除线虫的危害 ,但未完全改善重茬茄苗生长状况 ,且播种后 7d重茬土壤茄子出苗率比正茬低 15 % ,表明茄子连作障碍是土传病虫害和化感物质共同作用的结果。通过水培收集的根系分泌物 ,随添加量的增加而对茄子胚根、胚芽生长的抑制作用增强 ,表明化感作用是茄子连作障碍的重要因子之一。
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| 关 键 词： | 茄子 连作障碍 根结线虫 化感作用 |
| 收稿时间： | 2003/11/6 0:00:00 |
| 修稿时间： | 2003年11月6日 |
Effects of optimized irrigation and nitrogen fertilization on the canopy structure of winter wheat. |
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| FAN Zhong-Xue,WANG Pu,LIANG Zhen-Xing,MARION Boening Zilkens and WILHELM Claupein.Effects of optimized irrigation and nitrogen fertilization on the canopy structure of winter wheat.[J].Chinese Journal of Eco-Agriculture,2005,13(1):79-81. |
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| Authors: | FAN Zhong-Xue WANG Pu LIANG Zhen-Xing MARION Boening Zilkens and WILHELM Claupein |
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| Institution: | High-Tech Research Center,Shandong Academy of Agricultural Sciences,Jinan 250100,China;College of Agronomy and Biotechnology,China Agricultural University,Beijing 100094,China;College of Agronomy and Biotechnology,China Agricultural University,Beijing 100094,China;University of Hohenheim,Stuttgart 70599;University of Hohenheim,Stuttgart 70599 |
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| Abstract: | The effects of cont inuous cropping on the growth of eggplan t and its mechanism were studied with po t experiments.The results show that duri ng the growth period of 45 days,under th e condition of continuous cropping,the p lant height,leaf area,main and total roo t lengths of the eggplants are obviously ,lower than those under the condition of mono-cropping,causing the shoot and roo t fresh weights of eggplants to decrease by 33.2% and 30.2%,respectively and the endangerment of Meloidogyne becomes more severe with the growth of eggplant seedings.Although Meloido gyne are eliminated by autoclaving continuous mono-cropping soil,eggplant seedlings growth can not be improved com pared to mono-cropping ones growing in s terilizing soil,and the germination of eggplant seeds under continuous mono-cro pping is lower by 15% than that under mo no-cropping in 7 days after planting,whi ch suggests that the obstacles of contin uous cropping maybe result from Me loidogyn and allelopathy.It is fur ther verified that the more the adding r oot exudates is,the more their inhibitio n on the growth of eggplant radicles and plumules is,indicating that allelopathy is one of the important genes in the ob stacles of eggplant continuous cropping. |
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| Keywords: | Eggplant Obstacles of continuous cropping Meloidogyn e Allelopathy |
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