| Comparison of nitrogen dissolved rate for organic-inorganic complex materials cement and coated fertilizer in different soils |
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| DOI：10.7606/j.issn.1000-7601.2010.01.16 |
| Key Words: water as the solvent and coating organic-inorganic complex materials cement coated soil type leaching |
| Author Name | Affiliation | | XIAO Qiang | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | WANG Jiachen | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | ZUO Qiang | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | ZHANG Lin | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | LIU Baocun | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | ZHAO Tongke | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China | | ZOU Guoyuan | Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097, China |
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| Abstract: |
| Four kinds of organic-inorganic complex materials cement and coated fertilizer developed with a way of water as the solvent and coating were carried out to study the nitrogen dissolving rate under different ways of soil-column leaching. The results showed that when nitrogen accumulated dissolution rate was 50%, the time was 42 d, 36 d, 30 d and 18～24 d for B2, PS, F2 and F2F respectively. The curve of accumulated dissolution rate was the gentlest for B2, and then PS, F2 and F2F. The appearing peak time of nitrogen accumulated dissolution was the same for the same kind of cement and coated fertilizer. With B2 as an example, before peak time of nitrogen accumulated dissolution rate, instant dissolving rate in 2～13 d was the highest in red soil, and then drab soil and black soil. After the peak, nitrogen instant dissolving rate in 24～48 d was the highest in drab soil and the differences were not significant between red soil and black soil(P＜0.05). The effects of the texture were little on nitrogen dissolving from cement and coated fertilizer but great on the leaching amount. |
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