[1]CHEN Lei,GAO Shanxue,ZHOU George.Effects of Application of Slow Release Fertilizer Coated with Biochar on the Nitrogen Loss in Soil[J].Research of Soil and Water Conservation,2019,26(06):53-57.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 06
Page number:
53-57
Column:
Public date:
2019-10-17
- Title:
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Effects of Application of Slow Release Fertilizer Coated with Biochar on the Nitrogen Loss in Soil
- Author(s):
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CHEN Lei1, GAO Shanxue1, ZHOU George2
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1. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China;
2. School of Civil Engineering, Purdue University, West Lafayette, Indiana 47906, USA
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- Keywords:
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agricultural engineering; carbon-based slow release fertilizer; pot experiment; nitrogen loss
- CLC:
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S147.2;S153.6;X53
- DOI:
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- Abstract:
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Because of use of the large amount of nitrogen fertilizer and the high frequency of irrigation, the amount of nitrogen loss in vegetable soil is large, causing pollution of the surrounding water. Therefore, it is the current development trend to improve the fertilizer application way or to develop the environment-friendly fertilizer. Biochar was made from lotus leaves, and slow release fertilizer coated with biochar was prepared with biochar as its coating material. Through pot experiment and artificial rainfall experiment, the effects of conventional application of fertilizer, adding lotus leaf biochar and using slow release fertilizer coated with biochar on nitrogen leakage loss and runoff loss in the Pakchoi field were studied. It was found that nitrate nitrogen was the main form of nitrogen leakage and runoff loss in the Pakchoi soil. Compared with the conventional application of fertilizer, adding lotus leaf biochar increased the yield of Pakchoi by 32.6%, reduced the leakage loss of total nitrogen by 26.9%, reduced the heavy rain runoff loss of total nitrogen by 23.3% and reduced the rainstorm runoff loss of total nitrogen by 32.3%, while the application of slow release fertilizer coated with biochar increased the yield of Pakchoi by 42.8%, reduced the leakage loss of total nitrogen by 36.6%, reduced the heavy rain runoff loss of total nitrogen by 38.1% and reduced the rainstorm runoff loss of total nitrogen by 43.6%. Therefore, using agricultural waste resources to make biochar and to prepare slow release fertilizer coated with biochar has the important application prospect for reducing nitrogen loss in soil and controlling non-point source pollution.