水土保持学报2011，Vol.25Issue(6)：250-253,259,5.
硝化抑制剂型包膜复合肥的氮素释放特征及其对大白菜生长的影响
N-release Characteristics of Coated Compound Fertilizers Added by Nitrification Inhibitor and Their Effects on Chinese Cabbage
摘要
Abstract
Four homemade compound fertilizers with nitrification inhibitor dicyandiamide (DCD) being ratio 0% , 1% , 2% and 4% , separately were prepared out of common compound fertilizer by coating them with fly ash as major material. Soil incubation experiment and field experiment were used to study N-release characteristics of the fertilizers and their effects on Chinese cabbage. Results showed that: (l)Using four kinds of fertilizers could keep N as NH4+ - N for a long time, consequently, reduce the risk of nitrate N losses. The effects of four kinds of fertilizers on nutrient release property were 4%>2%>1%~>0%; (2)Four kinds of fertilizers increased chlorophyll content, photosynthetic rate, transpiration in the leaves of the Chinese cabbage during its mid and late growth stage, and the two kinds of which ratio being 1% and 2% were better than the others. The fertilizer added by 4% ratio DCD was lowest, however, the other three kinds of fertilizers improve the yield by 14. 0%~17. 2%, income by 14. 55%~17. 5%, and there were not obvious differences between the latter kinds and thermoplastic resins coated fertilizer. In addition, they decreased nitrate contents and organic acid contents by a certain extent in the functional leaves of the plant, and improved sugar-acid ratio and soluble sugar and Vc contents of the head of the pant at the harvest stage. Moreover, theeffects were not obvious comparing with common compound fertilizer and resin coated fertilizers.关键词
包膜复合肥/释放特征/抑制剂/粉煤灰/大白菜Key words
coated compound fertilizer/ release characteristics/ inhibitor/ fly ash/ Chinese cabbage分类
农业科技引用本文复制引用
侯俊,董元杰,李光宗,范振义,刘双..硝化抑制剂型包膜复合肥的氮素释放特征及其对大白菜生长的影响[J].水土保持学报,2011,25(6):250-253,259,5.基金项目
国家"十二五"科技支撑计划(2011BAD11B01,2011BAD11B02) （2011BAD11B01,2011BAD11B02）
国家"948"重点项目(2011-G30) （2011-G30）
国家自然科学基金(30871593) （30871593）
