| Effect of different fertilization systems on available phosphorus in black soil |
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| DOI：10.7606/j.issn.1000-7601.2010.01.14 |
| Key Words: fertilization system P supplying ability black soil |
| Author Name | Affiliation | | WANG Fengju | Northeast Agricultural University, Harbin, Heilongjiang 150030, China
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China | | HAN Xiaozeng | Northeast Agricultural University, Harbin, Heilongjiang 150030, China
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China | | WANG Fengxian | Northeast Agricultural University, Harbin, Heilongjiang 150030, China
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China | | SONG Chun | Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China | | ZHU Xia | Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China | | LU Sijia | Northeast Agricultural University, Harbin, Heilongjiang 150030, China
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, China |
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| Abstract: |
| Soil samples without fertilizer(CK), and with chemical fertilizer(NP) and chemical fertilizer amended with organic manure(NPM) were collected from the Hailun Agricultural Ecology Station of the Chinese Academy of Sciences to study the effects of different fertilizations on phosphorus supplying in black soil by pot experiment. The results showed that organic P in NP and NPM soils had stronger mineralization than that in CK soil, and planting maize was in favor of mineralization of soil P; The basic P supplying ability of CK soil was weaker than that of NP and NPM soils, and fertilization improved P supplying ability of CK soil, however, fertilization had little effect on the P supplying ability. Long-term planting crops wiout fertilizer application made P of soil in exhausting, and NK fertilization and planting crops increased the comsumption of soil P. CK soil had weaker P supplying ability, and the dependence of crops on soil P was lower, but it had higher efficiency in P utilization, so that P fertilization had obvious effect on crop yield increasing, however, NP and NPM soil had a reverse effect. |
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