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| 11. |
ISOLATION OF HUMUS WITH ENZYMATIC ACTIVITY FROM SOIL |
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Soil Science,
Volume 119,
Issue 2,
1975,
Page 178-180
A. McLAREN,
A. PUKITE,
I. BARSHAD,
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摘要:
Some observations are reported on soil extracts obtained by two methods of extracting soil organic matter. These methods yield products having urease activity that may be regarded as native humus. A somewhat lower urease activity is extracted than is commensurate with the carbon extracted but matches the nitrogen extracted in a summation of the contents of four major extracts, but such is not the case among the individual extracts. Further, following high-speed centrifugation it was found that sedimentation of urease activity is greater than that of the organic matter; hence the urease is not uniformly associated with the organic matter.
ISSN:0038-075X
出版商:OVID
年代:1975
数据来源: OVID
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| 12. |
Chemical MutagensPrinciples and Methods for Their Detection |
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Soil Science,
Volume 119,
Issue 2,
1975,
Page 181-181
CHARLOTTE AVERS,
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PDF (170KB)
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ISSN:0038-075X
出版商:OVID
年代:1975
数据来源: OVID
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| 13. |
Tektites |
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Soil Science,
Volume 119,
Issue 2,
1975,
Page 182-182
MICHAEL PIBUEN,
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PDF (177KB)
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ISSN:0038-075X
出版商:OVID
年代:1975
数据来源: OVID
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| 14. |
Slope Morphology |
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Soil Science,
Volume 119,
Issue 2,
1975,
Page 183-183
PETER WOLFE,
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PDF (90KB)
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ISSN:0038-075X
出版商:OVID
年代:1975
数据来源: OVID
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| 15. |
Potassium in soil |
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Soil Science,
Volume 119,
Issue 2,
1975,
Page 184-184
JOEL GIDDENS,
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PDF (48KB)
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ISSN:0038-075X
出版商:OVID
年代:1975
数据来源: OVID
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