不同基质对长柄水青冈种子出苗和幼苗生长的影响

通过室内盆栽试验,研究3种不同基质对长柄水青冈幼苗生理特性的影响。结果表明:长柄水青冈种子在常规园土+普通细砂基质中的出苗率最高,达93.33%,其次是常规园土栽培基质,为90%,最低的是普通细砂栽培基质,只有76.67%;常规园土+普通细砂基质中的长柄水青冈幼苗的长真叶时间最早,为26d,平均真叶数最多,达6片,株高最高,为16.87cm,其生长发育性状明显优于常规园土基质栽培,而普通细砂基质不适宜长柄水青冈幼苗的生长。试验结果显示,长柄水青冈在小苗生长期对基质是相当敏感的,采用常规园土+普通细砂基质栽培长柄水青冈幼苗,生长情况最佳,具有出苗率高、长势快的优势。

Effects of different substrates on seedling emergence and growth of Fagus longipetiolata

The authors investigate the effects of three different substrates on physiological characteristics of Fagus longipetiolata seedlings with pot experiments in this study. The results show that emergence rate of F. longipetiolata seedlings planted in substrate of general garden soil mixed with common sand reaches to 93.33%, followed by those planted in general garden soil substrate, with emergence rate of 90%, and the rate of those planted in common sand substrate is the lowest, which is at 76.67%. F. longipetiolata seedlings planted in substrate of general garden soil mixed with common sand have the earliest first euphylla time of 26 days, maximum averaged euphylla number of 6 pieces, and the highest averaged plant height of 16.87 cm. They are remarkably superior to those planted in substrate of general garden soil, while common sand substrate is not suitable for the growth of F. longipetiolata seedlings. The experiments reveal that F. longipetiolata seedlings are fairly sensitive to substrates, and that F. longipetiolata seedlings planted in substrate of general garden soil mixed with common sand have the advantages of high germination rate and growth rate.