桉树育苗用的有机废弃物基质理化性质分析-中国桉树.PDF

第31 卷 第4 期 桉树科技 Vol.3 1 No.4 2014 年12 月 EUCALYPT SCIENCE TECHNOLOGY Dec.2014 桉树育苗用的有机废弃物基质理化性质分析 1 2 ＊ 彭 彦 ，李绵盛 (1.国家林业局桉树研究开发中心，广东 湛江 524022；2.广宁县华扬肥料有限公司，广东 广宁 526345) 摘要：为降低育苗成本，寻找替代部分泥炭土作为桉树育苗基质，本研究对9 种由工业废弃物生产的有机基质， 添加珍珠岩和泥炭土混配而成的有机基质进行理化性质检测，结果表明：9 种混配的有机基质其容重为0.15 ~ 0.24 g·cm-3 、总孔隙度为64.41% ~ 78.66%、pH 值为6.02 ~ 7.35、EC 值为0.44 ~ 0.76 ms·cm-1，具有疏松、透气、保水、 酸碱度适合苗木生长的特点，并含有充足的养分、丰富的有机质供苗木生长所需，基本满足理想基质的要求。 关键词：工农废弃物；有机基质；理化性质；桉苗 中图分类号：S723.1 文献标识码：A Physiochemical Properties Analysis on Industrial and Agricultural Waste Compost Used as Growing Media for Eucalyptus Seedlings 1 2 PENG Yan , LI Mian-sheng (1. China Eucalypt Research Centre, Zhanjiang 524022, Guangdong, China; 2. Huayang Fertilizer Co.,Ltd, Guangning 526345, Guangdong, China) Abstract : After physicochemical evaluation of 9 organic substrates, which comprised varying mixtures of compost, perlite and peat, further studies were carried out to evaluate the suitability of the different substrate mixtures for propagating Eucalyptus seedlings. Results showed that: the density of the 9 substrates varied from 0.15 to 0.24 g·cm-3, the total porosity ranged from 64.4% to 78.7%, pH values ranged from 6.0 to 7.3, and EC values ranged from 0.44 to 0.76 ms·cm-1. The organic substrates evaluated all proved to be friable, breathable, water absorbent and with pHs generally suitable for seedling growth. The substrates were also rich in organic matter and contained adequate nutrients for seedling growth and generally meet the