几种主要CO2施肥肥源性能的比较与评价

17 3 2001 M5j, i/。gCO2 i0v, y, i9 y。2. 2. 2 煤球燃烧法 o V 3CO2, b =CO2 i 6, g, 6 y,CO2 i(m5a)。 g HW, i0Fv,QE。T 8CO2s+VC:M HW, CO2 i ; 0 5 m)CO2 i30min -9F, /, 10 20 m)CO2 i/(m5b)。gCO2 i 6 CO2db v 8;h >,gCO2 i/5CO2 db ;h > 。 CO2 i (V ? o |CO2 db h 1。图 5 煤球燃烧法 CO2浓度时空分布特性Fig. 5 Space-time distribution of CO2 releasedby honeycomb briquet combustion2. 2. 3 CO2颗粒气肥m6 A,9 R g ; iCO2 i M wLAY。* &shy; -, g uv uCO2 iMKv,70 100L/L, 8;T,4Nshl。13: 30 - g uCO2 i1v u20 30L/L,Y HMl。 R gCO2 db db ( , 40 kg /667m2 ? ; iCO2。2. 3 '1 CO2g' ' !|' s。   h 9 31 m312 jm,o.v v9 = R g jrs J.g<, 1996,23( 6): 3032.6 Moe R. CO2 enrichment in ScandinaviaJ. Act Hort,1984, 162: 217 225.Comparison and Appraisal of Four Different Methods for CO2 EnrichmentWei Min1, Wang Xiufeng1, Xing Yuxian1, Zhang Yanpeng1, Wang Jiyin2(1. Horticultural College of Shandong Agricultural University, Tai 'an 271018, China;2. Feicheng Agricultural Bureau of Shandong Province, Feicheng 271000, China)Abstract: Three methods for CO2 enrichment-chemical reaction( H2SO4+ N H4HCO3), briquet combustion,granular CO2 fertilizer were comparatively studied in free tunnels and solar greenhouses for cucumbercultivation, and the yearly total cost of different methods( including pure liquid CO2 ) were compared.Chemical reaction had higher CO2 releasing velocity and relatively lower equipment depreciation charge;honeycomb briquet combustion produced CO2 at moderate rate, and the raw material cost was the least;granular CO2 fertilizer having highest raw material cost released CO2 slowest. When the re-use of by-product of chemical reaction was concerned, annual cost of chemical reaction was similar with that ofbriquet combustion and liquid CO2. Comprehensively evaluated from viewpoints of ecology, energy-saving, cost and effect, briquet combustion was in more accordance with the present situations in Chinaincluding facility type, economic situation, resource condition and technique level, and so on.Key words: CO2 sources; chemical reaction; briquet combustion; granular CO2 fertilizer; liquid CO214 j<2001 M