【摘要】 本试验研究了 6种代用基质的理化特性。结果表明 ,锯末混沙 (S/S)、大豆叶混沙 (SL/S)、锯末混炉渣 (S/C)都有良好的孔隙度和保水能力 ,花生壳混沙 (PH/S)基质的孔隙度大 ,持水力较差 ,浇水的频率宜加大 ;基质S/S、PH/S、SL/S和S/C的N、P、K含量均较高 ,其它微量元素的含量也很丰富 ,S/SY(河沙混KD -1型高吸水树脂 )基质的大量元素和微量元素的含量均较低 ;基质S/S、PH/S、SL/S、S/C和PN/TS(松针混田土 )均呈酸性 ,其中PH/S的酸性最强 (pH5.5) ,其次是PN/TS基质 ,S/SY为弱碱性( pH7.1 ) ;以灰色关联度分析评价了 6种基质的理化特性。6种基质的灰色关联度大小顺序为 :ξSL/C>ξS/C>ξS/S>ξPN/TS>ξPH/S>ξS/SY,表明SL/S基质的综合性状为最好 ,以S/SY基质的综合评价指数最低更多还原

【Abstract】 The physical and chemical characteristics of six growing-media were tested. Results showed that all the mixture of saw-dust and river-sand(S/S=1∶1), soybean leaves and sand(SL/S=1∶1), saw-dust and coal slag(S/C=1∶1) had properly total porosity(TP), and higher water holding capacity(WHC). The highest TP was obtained by mixture of peanut-hull and sand(PH/S) in which WHC was the lowest. It enriched in concentration of N,P,K on S/S,PH/S,SL/S and S/C media. The lowest elements content was observed in KD-1 type hydrophilic polymer mixed with sand(S/SY=0.5∶99.5); The pH unit in PH/S-medium was 5.5, and all the others were weak acidity except S/SY which appeared weak alkalinity(pH7.5). The characteristics of medium was evaluated by gray relational grade which showed the order were: SL/S>S/C>S/S>PN/TS>PH/C>S/SY.更多还原