【玉米秸秆和羽毛粉制成生物基高分子复合材料用于控释保水肥料】Yuechao Yang *†‡ Zhaohui Tong § Yuqing Geng † Yuncong Li *‡ and Min Zhang †. Biobased Polymer Composites Derived from Corn Stover and Feather Meals as Double-Coating Materials for Controlled-Release and Water-Retention Urea Fertilizers. J. Agric. Food Chem. 2013 61 (34) pp 8166–8174
Abstract
In this paper we synthesized a biobased polyurethane using liquefied corn stover isocyanate and diethylenetriamine. The synthesized polyurethane was used as a coating material to control nitrogen (N) release from polymer-coated urea. A novel superabsorbent composite was also formulated from chicken feather protein (CFP) acrylic acid and NN′-methylenebisacrylamide and used as an outer coating material for water retention. We studied the N release characteristics and water-retention capability of the double-layer polymer-coated urea (DPCU) applied in both water and soils. The ear yields dry matter accumulation total N use efficiency and N leaching from a sweet corn soil-plant system under two different irrigation regimes were also investigated. Comparison of DPCU treatments with conventional urea fertilizer revealed that DPCU treatments reduced the N release rate and improved water retention capability. Evaluation of soil and plant characteristics within the soil-plant system revealed that DPCU application effectively reduced N leaching loss improved total N use efficiency and increased soil water retention capability.
【土壤食物网特征用于解释欧洲土地利用系统的生态系统服务】Franciska T. de Vriesab1 Elisa Thébaultc