Ecology and Nature Conservation Institute, Chinese Academy of Forestry/Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration, Beijing 100091, China.
Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China.
Ying Yong Sheng Tai Xue Bao. 2023 Jul;34(7):1817-1824. doi: 10.13287/j.1001-9332.202307.014.
To screen environment-friendly seedling cultivation substrates which could replace peat and with less cost, we compared the effects of different agricultural and forestry residue mixed substrates on cutting propagation of , in an experiment following randomized block design. There were five types of mixed substrates, including peat + vermiculite + perlite (T), edible mushroom residue (EMR) + vermiculite + perlite (T), carbo-nized rice husk (CRH) + vermiculite + perlite (T), EMR + slag + sawdust (T) and CRH + EMR + slag (T). The results showed that the bulk density of T was the lowest, followed by T, which significantly differed from other mixed substrates. The non-capillary porosity of T was significantly greater than that of T, while the capillary porosity and the total porosity of T was lower than T and T, respectively. T had the highest contents of total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen, available phosphorus, substrate moisture and the highest pH, which differed significantly from other mixed substrates in most chemical indicators. The membership function values of rooting rate and growth indicators of cuttings with different mixed substrates were in order of T > T > T> T > T. Most indicators with larger grey relation values were physical indicators. The top five indicators were capillary water capacity, total potassium, field water capacity, maximum water capacity, and total porosity, with both capillary water capacity and total potassium content ranking first. In general, the physicochemical properties, rooting rate, and growth characteristics of cuttings under T were better than those of other mixed substrates. The capillary water capacity and total potassium were the main factors affecting rooting and growth of cuttings. At the early stage of cutting, the physical properties of mixed substrate had greater effect on rooting rate and growth of cuttings than the chemical properties. Overall, our results suggested that T should be preferred in the cutting propagation of .
为筛选成本低、环保的替代泥炭的育苗基质，采用随机区组设计，比较了不同农林废弃物混合基质对 嫩枝扦插繁殖的影响。共设置 5 种混合基质，分别为泥炭+珍珠岩+蛭石（T）、菌渣+珍珠岩+蛭石（T）、炭化稻壳+珍珠岩+蛭石（T）、菌渣+高炉渣+木屑（T）和炭化稻壳+菌渣+高炉渣（T）。结果表明：T 的容重最小，显著低于其他混合基质；T 的非毛管孔隙度显著大于 T，而 T 的毛管孔隙度和总孔隙度显著小于 T 和 T；T 的全氮、全磷、全钾、碱解氮、有效磷、基质含水量和 pH 均最高，与其他混合基质差异显著。不同混合基质对插穗生根率和生长指标隶属函数值的大小顺序为 T＞T＞T＞T＞T。灰色关联度较大的指标主要为物理指标，前 5 位依次为毛管持水量、全钾、田间持水量、最大持水量和总孔隙度，其中毛管持水量和全钾含量均居首位。综合来看，T 的理化性质、生根率和插穗生长状况均优于其他混合基质。毛管持水量和全钾含量是影响插穗生根和生长的主要因子。在扦插初期，混合基质的物理性质对生根率和插穗生长的影响大于化学性质。总体而言，T 应优先用于 的嫩枝扦插繁殖。
