| Cite this article: | 吕鉴于,高文俊,郝鲜俊,等.不同有机肥对矿区复垦土壤磷素矿化特征研究[J].灌溉排水学报,0,():-. |
| LV Jianyu,GAO Wenjun,HAO Xianjun,et al.不同有机肥对矿区复垦土壤磷素矿化特征研究[J].灌溉排水学报,0,():-. |
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| The Study of Phosphorus Mineralization Characteristics in a Mine Reclaimed Soil under Applying Different Organic Fertilizers* |
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LV Jianyu1, GAO Wenjun2, HAO Xianjun1, ZHANG Ruoyang1, ZHANG Bokai1, XUE Yuchen1
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1.College of Resources and Environment,Shanxi Agricultural University;2.College of Animal Science and Veterinary Medicine,Shanxi Agricultural University
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| Abstract: |
| 【Objective】The objective of this research is to explore the phosphorus mineralization characteristics on reclaimed soil in coal mining subsidence areas.【Method】The laboratory incubation experiment was conducted to study the dynamic changes of soil available phosphorus after applying three kinds of organic fertilizers(chicken manure, pig manure, cattle manure), including no fertilizer treatment as CK and chemical fertilizer treatment as control, meanwhile combined the phosphatase activity and phosphorus inversion intensity in phosphorus mineralization process, thereby clarifying the effects of different organic fertilizers on phosphorus bioavailability.【Result】The results showed that: (1) In whole indoor constant temperature incubated process, the content of available phosphorus in each fertilizer treatment presented downtrend with incubated time, but the content of available phosphorus on different incubated period varied with different treatments, with a sequence of chicken manure > pig manure ≥ cattle manure >chemical fertilizer > CK. In the end of incubation(105d), chicken manure treatment, pig manure treatment and cattle manure treatment significantly increased the content of soil available phosphorus (18.56%-37.09%), compared with chemical fertilizer treatment; compared with pig manure treatment and cattle manure treatment, the content of available phosphorus of chicken manure treatment significantly increased by 11.93%-15.62%, but there was no significant difference between pig manure treatment and cattle manure treatment.(2) In whole incubated process, the equations of pseudo-second order could better describe the kinetics of the available phosphorus release process in each fertilizer treatment, followed by Elovich equation and power function equation, whereas the parabolic equation had a poor fitting effect. (3) In whole incubation, the phosphatase activity of organic fertilizer treatments significantly higher than that of chemical fertilizer treatment, increased by 39.14%-120.70%. (4) During the earlier stage of incubation (0-14d), pig manure treatment and chemical fertilizer treatment had lager effects on soil organic phosphorus inversion intensity, but there was no significant difference between pig manure treatment and chemical fertilizer treatment. Compared with chicken manure treatment and cattle manure treatment, soil organic phosphorus inversion intensity of pig manure treatment significantly increased by 41.51% and 86.52% respectively; in the middle and late period of incubation (42-105d), there was no significant difference among different fertilizer treatments.【Conclusion】 In a word, the application of organic fertilizers could accelerate the phosphorus mineralization in the reclaimed soil. Among three kinds of organic fertilizer, chicken manure had a better effect on improving the content of soil available phosphorus than that of pig manure and cattle manure. |
| Key words: organic fertilizers; phosphorus mineralization; mine reclaimed soil |
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