[Development and evaluation of fertilizers cemented and coated with organic-inorganic materials].
Four kinds of organic-inorganic cementing and coating materials were prepared by a coating method using water as the solvent, and the corresponding cemented and coated fertilizers (B2, PS, F2, and F2F) were produced by disc pelletizer. The tests on the properties of these fertilizers showed that the granulation rate, compression strength, and film-forming rate were B2 > PS > F2 > F2F. Soil column leaching experiment showed that the curve of accumulated nitrogen-dissolving rate was the gentlest for B2. In 48 days, the accumulated nitrogen-dissolving rate was in the order of B2, 54.65% < PS, 56.16% < F2, 59.47%, < F2F, 63.12%. Field experiment showed that compared with the same application amount of NPK, all the test fertilizers had better effects on corn yield, among which, B2 was the best, with the corn yield and fertilizer use efficiency increased by 19.72% and 20.30%, respectively. The yield-increasing effect of other test fertilizers was in the order of PS > F2 > F2F.
Xiao
Qiang
Q
Institute of Plant Nutrition & Resources, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China. xqiang1978@163.com
Wang
Jia-Chen
JC
Zuo
Qiang
Q
Zhang
Lin
L
Liu
Bao-Cun
BC
Zhao
Tong-Ke
TK
Zou
Guo-Yuan
GY
Xu
Qiu-Ming
QM
D018533:Biomass; D002484:Cementation / Q000379:methods; D055598:Chemical Phenomena; D005308:Fertilizers; D007287:Inorganic Chemicals / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry*; D009930:Organic Chemicals / Q000737:chemistry; D003313:Zea mays / Q000254:growth & development*
D005308:Fertilizers; D007287:Inorganic Chemicals; D009930:Organic Chemicals; D009584:Nitrogen