几种主要CO2施肥肥源性能的比较与评价
p17 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 im5a。 g HW,] i0Fv,QE。T 8CO2sVCM] HW, CO2 i ; 0~ 5 mCO2 i30min[ -9F, /, 10~ 20 mCO2 i/m5b。gCO2 i 6 CO2db v 8;h{ gt;,gCO2 i/5CO2 db ;h{ gt; 。 ]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。* amp;shy; -, g uv uCO2 iMKv,70~ 100μL/L, 8;T,4Nshl。13 30 - g uCO2 i1v u20~ 30μL/L,Y HMl。 R gCO2 db db , 40 kg /667m2 ; iCO2。2. 3 39;1 CO2g39; 39; |39; s。 nbsp; h{ 9 31 m312 jm],o.v v9 R g j\rs[ J].glt;, 1996,23 6 30~32.[6] Moe R. CO2 enrichment in Scandinavia[J]. Act Hort,1984, 162 217~ 225.Comparison and Appraisal of Four Different s for CO2 EnrichmentWei Min1, Wang Xiufeng1, Xing Yuxian1, Zhang Yanpeng1, Wang Jiyin21. Horticultural College of Shandong Agricultural University, Tai 39;an 271018, China;2. Feicheng Agricultural Bureau of Shandong Province, Feicheng 271000, ChinaAbstract Three s 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 s 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 uated 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 jlt;2001 M/p