| 磷矿粉缓解酸性土壤铝毒的研究 |
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| 引用本文： | 胡红青,黄巧云.磷矿粉缓解酸性土壤铝毒的研究[J].中国农业科学,1995,28(2):51-57. |
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| 作者姓名： | 胡红青 黄巧云 |
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| 作者单位： | 华中农业大学土化系，武汉 430070 |
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| 摘 要： | 用培养试验研究了贵州昆阳磷矿粉（GPR）、湖南黄荆坪磷矿粉（HPR）和湖北荆襄磷矿粉（JPR）与酸性土壤混合培养后，对小麦幼苗根生长和土壤化学性质的影响。结果表明：⑴三种磷矿粉与供试土壤混合培养后，均可使土壤上生长4天的麦苗根长度增加，与对照土壤上麦苗根长相比，统计结果相差极显著。⑵土壤经磷矿粉处理后，Ph值增高，易溶性钙（用0.015mol/LKCl提取）和交换性钙含量增加。易溶性铝含量降低，表明施用磷矿粉有供钙、缓解铝毒和促进小麦幼苗根系生长的作用。⑶测定了不同处理土壤的溶液离子组成，初步探讨了磷矿粉缓解铝毒的原因。这些结果为我国中、低品位磷矿粉的直接施用提供了依据。
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| 关 键 词： | 磷矿粉 酸性土壤 铝毒 |
THE DIMINISHING EFFECT OF PHOSPHATE ROCK APPLICATION ON ALUMINUM TOXICITY IN ACID SOIL |
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| Hu Hongqing,Huang Qiaoyun,Li Xueyuan,Xu Fenglin.THE DIMINISHING EFFECT OF PHOSPHATE ROCK APPLICATION ON ALUMINUM TOXICITY IN ACID SOIL[J].Scientia Agricultura Sinica,1995,28(2):51-57. |
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| Authors: | Hu Hongqing Huang Qiaoyun Li Xueyuan Xu Fenglin |
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| Abstract: | The effects of a series of phosphate rocks sampled from Kunyang (Gnizhou Province, GPR),Huanglingping (Hunan Province, HPR) and Jingxiang (Hubei Province, JPR) on the chemical properties of acid soil and root elongation of wheat seedlings were studied. The results indicated:(1)Application of all the these kinds of PRs increased root length (RL) of wheat seedlings. RL increased with the increment of the amount of PRs. For the same quantity of available phosphorus,JPR treatment increased RL most remarkably.(2) Soil pH and the calcium of calcium extracted with 0.015mol/L KCl increased but aluminum content decreased in the soil treated with PRs, which illustrate PRs tested can supply calcium and alleviate aluminum toxicity, improve root growth environment.(3) After the soil was amended with PRs, the compositions of soil solution were measured.The alleviating mechanism for aluminum toxicity is discussed in the paper. |
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| Keywords: | Phosphate rock Acid soil Aluminum toxicity |
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