几种主要CO2施肥肥源性能的比较与评价

»17 »3 ù2001 M5j, i/†。Íg÷ÄCO2 i0v, ” ÛÎ y, i†®9 y。2. 2. 2 煤球燃烧法¿ o — VñÏ÷÷‚Á 3CO2, b ° òÄCO2 iûà  6, g÷Í,  6 Î y,CO2 iÚm5a。üÉ g HW,‚]ÊÄ i0Fv,Œ®¿ÄÐQ‹E。Tþ •8CO2sƒÄVC¹M] HW©ç,ù  ÖÄCO2 i ®; 0～ 5 mCO2 i30min[ -9F, –ª/†, 10～ 20 mCO2 iûÃ/†m5b。Íg÷ÄCO2 i  6 ª üCO2db v¿ •8;†h{„ ” Û å ,ùg÷ÄCO2 i/†5®¿CO2 db ‚€Ê;†h{„ ” Û å îÁ。ª ù‚]ÊÄCO2 i †®V Ð ¿ o — |ÐCO2 db h µ1。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 ì g °;Ñ iCO2 i °MÄ wLíA÷•Y。*ä£ ôshy; -, g uÐv uCO2 iMµKv,ÿÚ70～ 100μL/L,£ ôª®¿ •8;†T¨,4Nµshl。13 30 -ª g uCO2 iÇ1v uÚ20～ 30μL/L,ÏöY„ HMµ÷l。ƒ ª ü R ì g¥CO2 db „ db Î  ®, 40 kg /667m2¨ ‚ ¿ ÿ °;Ñ iCO2Ìâ。2. 3 î1 CO2g÷îÀ  “ð î„ |øî †s。ô Á  „ð h{ 9 ØÁ 31 m312 jm],¦½o©.v ° v’9 Ä Rì g j\r‹s[ J].Ägý, 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 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 jýñÐ2001 M