| 水培条件下玉米幼苗利用钾长石作钾源的研究 |
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| 引用本文： | 李甲亮,李学平,李乐梅.水培条件下玉米幼苗利用钾长石作钾源的研究[J].土壤通报,2011(6). |
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| 作者姓名： | 李甲亮 李学平 李乐梅 |
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| 作者单位： | 滨州学院山东省黄河三角洲生态环境重点实验室;湖南大学环境科学与工程学院; |
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| 基金项目： | 滨州学院博士科研启动项目(2008Y06); “十一五”国家科技支撑计划项目(2006BAC01A13)资助 |
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| 摘 要： | 为研究利用细菌分解钾长石作为植物钾源的可行性,进行了玉米水培正交实验。单因素分析表明:培养体系内钾细菌投量并非越多越好,以2%较合适;钾长石粉投量与解钾量正相关;植物根系分泌物和振荡对细菌解钾促进作用明显;而外加可溶钾源对细菌解钾有抑制作用。对细菌、钾长石投量、pH和玉米苗数四因素正交分析表明:细菌解钾最优条件为细菌投量2%,钾长石粉为5 g L-1,pH=5,玉米为3棵,从而为细菌钾肥的开发提供参考。
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| 关 键 词： | 水培 钾细菌 钾长石 生物解钾 |
Stduy on the Usage Potash Feldspar as Potassium Source for Young Corn under Hydroponics Condition |
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| LI Jia-liang ,LI Xue-ping ,LI Le-mei.Stduy on the Usage Potash Feldspar as Potassium Source for Young Corn under Hydroponics Condition[J].Chinese Journal of Soil Science,2011(6). |
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| Authors: | LI Jia-liang LI Xue-ping LI Le-mei |
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| Institution: | LI Jia-liang 1,LI Xue-ping 1,LI Le-mei 2 (1.Yellow River Delta Eco-environment Key Lab of Shandong Province,Binzhou 256603 China,2.College of environmental science & engineering,Hunan University,Changsha 410082,China) |
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| Abstract: | In order to study the possibility of usingage Bacillus Mucilaginosus to release K-feldspar as an available K source of crops,the orthogonal experiments of maize hydroponics culturing are carried out.Single-factor analysis shows that: the suitable bacterial dosage is 2%;there is a positive correlation between K-feldspar bioresolving capability and its dosage;the factors of plant root exudates and oscillation can accelerate the bioresolving of K-feldspar,but the adscititious soluble K has an inhibiting effect... |
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| Keywords: | Hydroponics culture Silicate Bacteria Potash feldspar Bioresolving of K-feldspar |
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