Alternative Substrates Formulated with Agro-Industrial Residues for Forest Species Seedling Production

Abstract This study aimed to evaluate different container sizes and substrates formulated with agro-industrial residues to produce Handroanthus heptaphyllus and Schinus terebinthifolius seedlings. The experiment had a completely randomized design with four replications (48 seedlings each), in a factorial scheme (containers × substrates), with two containers (110 and 180 cm3) and ten substrates (agro-industrial residues (crushed peach pits and peel rice) mixed with organic compost). Carbonized and hydrolyzed rice husk (CRH and HRH, respectively) were used. At 90 and 108 days after the emergence of the S. terebinthifolius and H. heptaphyllus seedlings, the morphophysiological attributes were evaluated. Considering the attributes evaluated in this study, the 180 cm3 container promoted more significant seedling growth for both species. Substrates containing up to 20% CRH, HRH, or crushed peach pits (CPP) are indicated for S. terebinthifolius, and those with up to 30% CRH or 10% HRH or CPP are indicated for H. heptaphyllus.

摘要 本研究旨在评估不同容器规格与以农工业废弃物为原料配制的基质，用于培育七叶蚁木（Handroanthus heptaphyllus）和巴西胡椒木（Schinus terebinthifolius）的幼苗。试验采用完全随机设计，设置4次重复（每重复含48株幼苗），以容器×基质为析因试验方案，共包含2种容器（容积分别为110 cm³和180 cm³）与10种基质——基质以农工业废弃物（碎桃核（crushed peach pits, CPP）与稻壳（peel rice））与有机堆肥混合配制而成，试验所用的废弃物类型包括碳化稻壳（carbonized rice husk, CRH）与水解稻壳（hydrolyzed rice husk, HRH）。分别在巴西胡椒木和七叶蚁木幼苗出苗后90天、108天，测定其形态生理性状。综合本研究测定的各项指标，180 cm³的容器可显著促进两种苗木的生长。针对巴西胡椒木幼苗，推荐使用CRH、HRH或CPP占比不超过20%的基质；针对七叶蚁木幼苗，推荐使用CRH占比不超过30%，或HRH、CPP占比不超过10%的基质。