Preparation of Urea-formaldehyde-gypsum-bentonite Based Specialty Slow-release Fertilizers for Soybean and Evaluation of Nutrient Release Characteristics(PDF)
《大豆科学》[ISSN:1000-9841/CN:23-1227/S]
- Issue:
- 2013年02期
- Page:
- 220-223
- Research Field:
- Publishing date:
Info
- Title:
- Preparation of Urea-formaldehyde-gypsum-bentonite Based Specialty Slow-release Fertilizers for Soybean and Evaluation of Nutrient Release Characteristics
- Author(s):
- MA Chun-xue1; DENG Yue-quan1; DONG Fa-qin2; LI Na1; LI Li-jun1
- (1.School of Materials,Southwest University of Science Technology,Mianyang 621010,China;2.The Ministry of Education Key Laboratory of Solid Waste Disposal and Resource Builded by Province and the Ministry of Education,Mianyang 621010,China)
- Keywords:
- Urea-formaldehyde; Gypsum; Bentonite; Specialty slow-release fertilizers for soybean; Release characteristics
- PACS:
- -
- DOI:
- 10.3969/j.issn.1000-9841.2013.02.018
- Abstract:
- The aim of the study was to prepare soybean specific slow-elease fertilizers for soybean with the low formaldehyde urea-formaldehyde-gypsum-bentonite as the organicinorganic binder by an integral preparation technology of extrusion mixing reaction,vibration screener and disc granulation,and nutrients release characteristics were determined by the method of continuous leaching in quartz sand and compared with an conventional fertilizer to evaluate the release characteristics of N,P,K and S in soybeans slow release fertilizers.The results showed that nutrients release of slowrelease fertilizers prepared were slower and longer and release characteristics of the coated slow release fertilizers was the best.
Last Update: 2014-04-03