title: [Effects of sulfur- and polymer-coated controlled release urea fertilizers on wheat yield and quality and fertilizer nitrogen use efficiency].
abstract: A field experiment was conducted to study the effects of sulfur- and polymer-coated controlled release urea fertilizers on wheat yield and its quality, plow layer soil inorganic nitrogen (N) contents, and fertilizer N use efficiency. Compared with traditional urea fertilizer, both sulfur- and polymer-coated controlled release urea fertilizers increased the grain yield by 10.4%-16.5%, and the grain protein and starch contents by 5.8%-18.9% and 0.3%-1.4%, respectively. The controlled release urea fertilizers could maintain the topsoil inorganic N contents to meet the N requirement for the wheat, especially during its late growth stage. In the meantime, the fertilizer N use efficiency was improved by 58.2%-101.2%. Polymer-coated urea produced better wheat yield and higher fertilizer N use efficiency, compared with sulfur-coated controlled release urea.
authors.affiliation: State Key Laboratory of Crop Biology/National Engineering Research Center for Slow/Controlled Release Fertilizers/College of Resources and Environment, Shandong Agricultural University, Tai' an 271018, Shandong, China. flma0620@163.com
authors.forename: Fu-Liang
authors.initials: FL
authors.lastname: Ma
authors.forename: Fu-Peng
authors.initials: FP
authors.lastname: Song
authors.forename: Yang
authors.initials: Y
authors.lastname: Gao
authors.forename: Peng
authors.initials: P
authors.lastname: Zou
mesh_terms: D000383:Agriculture / Q000379:methods; D005308:Fertilizers; D009584:Nitrogen / Q000378:metabolism*; D011108:Polymers; D011786:Quality Control; D013455:Sulfur; D014908:Triticum / Q000737:chemistry / Q000254:growth & development*; D014508:Urea / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D005308:Fertilizers; D011108:Polymers; D013455:Sulfur; D014508:Urea; D009584:Nitrogen