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为缓解草炭大量使用带来的环境问题,在华北落叶松容器育苗过程中添加蘑菇渣堆肥以替代草炭,添加蘑菇渣堆肥体积比例分别为0%(T_0)、15%(T_1)、18.75%(T_2)、25%(T_3)、37.50%(T_4)、50%(T_5)、56.25%(T_6)、60%(T_7),研究不同配比下基质的理化性质以及对华北落叶松1年生移植容器苗生长和营养积累的影响.结果表明:当蘑菇渣堆肥替代草炭的比例≤50%时,苗木苗高、地径和生物量与常用草炭处理无显著差异,且处理T_2、T_4、T_5苗木体内养分浓度显著高于对照,基质p H值处于微酸性或中性范围,适宜苗木生长;当蘑菇渣添加比例>50%时,基质p H值偏碱性,苗木生长受到不利影响,苗木质量下降.当蘑菇渣添加比例为15%时,苗木质量最好,苗高、地径和单株生物量达到最大.因此,蘑菇渣替代草炭培育华北落叶松移植容器苗是完全可行的,替代比例最高可达到50%,当添加比例为15%时,可培育出高质量的苗木.
In order to alleviate the environmental problems caused by the heavy use of peat, mushroom compost was added to replace peat in the process of seedling growth of Larix principis-rupprechtii, and the proportion of compost added with mushroom compost was 0% (T 0), 15% (T 1) and 18.75% T_2, T_3, 37.50%, T_5, 56.25% and 60%, respectively. The effects of different ratios of physico-chemical properties on the physico-chemical properties and the effects of 1-year old transplantation of Larix principis-rupprechtii Seedling growth and nutrient accumulation.The results showed that when the proportion of mushroom residue compost replaced peat was less than 50%, there was no significant difference between seedling height, diameter and biomass and common peat treatment, and T_2, T_4 and T_5 seedlings The nutrient concentration in the plant was significantly higher than that in the control, and the p H value of the plant was slightly acidic or neutral in the range of slightly acidic or neutral, which was suitable for the growth of nursery stock. When the adding proportion of mushroom residue was more than 50%, the p H value of the plant was alkaline and the growth of nursery stock was adversely affected. Decreased.When the mushroom residue was added in the proportion of 15%, the best seedling quality, seedling height, diameter and the maximum biomass per plant.Therefore, mushroom residue instead of peat cultivation of Larix principis-rupprechtii transplant container seedlings is entirely feasible, the proportion of substitution Up to 50%, when the addition ratio of 15%, you can breed high The amount of seedlings.