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为了揭示油茶幼苗的生长规律,为培育油茶苗的丰产措施提供依据,笔者观测、记录了油茶幼苗地下和地上部分的生长过程。首先,在苗圃地上设置三块面积各为1m~2的样方,每块样方中有代表性地选5株幼苗分别编号,并定期统计幼苗出土株数。此外,在固定的667m~2苗床中顺序挖取10～20株幼苗,在室内观测并分别记载幼苗的茎高和根长,绘下幼苗图。油茶种子萌动和幼苗出土过程:12月撒播,次年3月下旬开始萌动,胚根突破种壳形成初生根。10天后见土表出现隆起的辐射状裂缝,此时的实生根平均长度为6cm,根茎粗1.5mm。萌动后第15天幼苗开始陆续出土。幼苗出土时间先后不一,最早和最迟出土相隔两个多月。幼苗出土后茎、叶生长
In order to reveal the law of growth of Camellia oleifera seedlings, to provide the basis for cultivation of Camellia oleifera seedlings, the author observed and recorded the growth of underground and aboveground parts of Camellia oleifera seedlings. First, set up three plots of 1m ~ 2 in each nursery on the ground, and select 5 seedlings representatively in each plots, and regularly count the number of seedlings unearthed. In addition, 10 ~ 20 seedlings were dug in a fixed 667m ~ 2 seedbed in order to observe and record the stem height and root length of the seedlings indoors. Camellia seed germination and seedling excavated process: sowing in December, germination began in late March the following year, the radicle broke through the shell formation of primary roots. Ten days later, see the surface of the soil appeared uplift radial crevices, root mean time at this time the average length of 6cm, rhizome rough 1.5mm. 15 days after germination seedlings began to unearthed one after another. Seedling unearthed in time, the earliest and latest unearthed more than two months apart. After the emergence of young stems, leaves grow