几种栽培花卉基质的理化特性研究

对几种重要的花卉栽培基质的理化性质进行了测定,结果表明:岩棉的通透性能很好,几乎不含有效养分、无缓冲能力。泥炭本身含有一定的养分,大小孔隙度、容重适度,总盐含量适中,有一定的缓冲能力。椰糠的总盐含量和水溶性盐含量过高,在使用前必须进行处理。泥炭、椰糠采用混合基质后,理化性质有所改善。蛭石:珍珠岩(V:V=1:1)的保水力相对较差。在生产中,除考虑基质的上述理化性质即实用性外,还必须根据经济性的原则考虑基质的选择。

Physical and Chemical Properties of Several Important Media

Physical and chemical properties of several important media for ornamental plants grown were studied.The results showed that total pore space of rockwool was enough,but it was not good for available nutrients or CEC.Peat was one of the best media for proper physical properties and chemical properties.Based on investigation,both the soluble salinity(1.90mS cm~(-1)) and available phosphorus(188.48 mg kg~(-1)) of coco fiber were very high,which possibly resulted in nutrient imbalance in plants,while the mixture media could be used to solve this problem of single medium.Compost medium peat-perlite(volume,1:1) kept lower waterhold capacity than other media.Both property and economic must be synthetically considered in practice.