| 江苏省土壤钾素的供应能力与钾肥施用问题 |
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| 引用本文： | 张效朴,杜承林,马茂桐,陈际型,贾义,谢建昌.江苏省土壤钾素的供应能力与钾肥施用问题[J].土壤学报,1978,15(1):61-74. |
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| 作者姓名： | 张效朴 杜承林 马茂桐 陈际型 贾义 谢建昌 |
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| 作者单位： | 中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所;中国科学院南京土壤研究所 |
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| 摘 要： | 随着我国农业生产的不断发展,复种指数和单位面积产量的不断提高,南方不少地区施用钾肥已成为夺取高产稳产的重要条件之一,有关土壤钾素状况和钾肥施用问题愈来愈受到人们的重视.江苏省地处我国南北的过渡带,其土壤是否缺钾,钾肥的需要程度如何,是生产实践上有待明确的一个问题.
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THE SUPPLY OF SOIL POTASSIUM AND THE EFFECT OF POTASSIUM FERTILIZER ON CROP RESPONSE IN KIANGSU PROVINCE |
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| Chang Hsiao-pu,Tu Cheng-lin,Ma Mao-tong,Chen Chi-hsing,Chia Yi and Hsieh Chian-chang.THE SUPPLY OF SOIL POTASSIUM AND THE EFFECT OF POTASSIUM FERTILIZER ON CROP RESPONSE IN KIANGSU PROVINCE[J].Acta Pedologica Sinica,1978,15(1):61-74. |
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| Authors: | Chang Hsiao-pu Tu Cheng-lin Ma Mao-tong Chen Chi-hsing Chia Yi and Hsieh Chian-chang |
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| Institution: | Nanking Institute of Soil Science, Academia Sinica;Nanking Institute of Soil Science, Academia Sinica;Nanking Institute of Soil Science, Academia Sinica;Nanking Institute of Soil Science, Academia Sinica;Nanking Institute of Soil Science, Academia Sinica;Nanking Institute of Soil Science, Academia Sinica |
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| Abstract: | The potassium contents of various soils in Kiangsu differ greatly. Analysis of more than seven hundred representative soil samples selected from different parts of the Province showed that the contents of available K (1N NH4,OAc extractable) in soils ranged 4.8-32.0 mg K2O/100 g soil,slowly available K (soluble in boiling 1N HNO3) 20.9-145.1 mg K2O/100 g soil,and the total,K2O 1.41-2.67% (for detailed informations refer to table 1 in the Chinese text).It was found that the parent materials and their degree of weathering,and soil texture have coused such differences. |
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