几种有机物料理化性状分析及与传统泥炭基质的比较

测量了花生壳粉、豆秆粉等有机物料的理化性状,并与传统泥炭基质进行了比较.各物料容重、比重、孔隙度等均在适宜范围之内.酒糟的饱和含水量仅为162.6%,而椰糠的饱和含水量超过其自身重量的5倍.酒糟中积累了大量有机酸和较多的矿质营养,导致pH下降,EC较高,其它物料微酸性.椰糠可溶性盐离子含量高,EC高于对照和其它物料.敦化泥炭阳离子交换量(CEC)高达95.81 cmol/kg,锯木屑最低,为26.92 cmol/kg.各物料有机质及纤维素含量均高于2种泥炭基质.酒糟氮、磷含量远高于泥炭及其它物料.钙、镁、铁、锰元素均以2种泥炭为最高,而椰糠其它元素含量相对较高.花生壳粉中钙元素含量相对较高.

Test on The Physical and Chemical Characteristics of Several Organic Materials And Compare to The Traditional Peat Moss Cultural Media

Using the powder of peanut hull, powder of soybean stalk and so on as experimental materials. The physical and chemical characteristics were studied. The results showed that the bulk density, the spedfic gravity, the total porosity and the watered porosity of all materials fit for the growing of the most plants. The saturable water capacity of the lees was 162. 6%, while the cocoa nut coir can hold the water 5 times higher than the weight of itself. A lot of organic acid and metal nutrition accumulated in the lees during the process of zymolysis, which lead to the low pH and high EC. The content of dissoluble salinity in the two peat-mosses was higher than all other materials, and the EC follows. The CEC of the Dunhua peat-mosses was as high as 95.81 cmol/kg, while by contraries the CEC of sawdust was just 26. 92cmol/ kg. The content of total organic matter and cellulose in the all the organic materials were higher than both of the two peat-mosses. The content of N,P in the lees was far higher than the peat-mosses and other materials. The two peat-mosses were both highly rich of Ca,Mg,Fe,Mn,while the other nutrition elements in the cocoa nut coir were relatively high. The Ca in the powder of peanut hull was comparatively high also.