观光木一年生苗生长规律研究

Study on the growth rules of annual seedling of Tsoogiodendron odorum

采用大田试验方法,对观光木一年生苗的生长规律及其不同播种期对观光木苗木生长的影响进行了初步研究。主要结果是:观光木1年生播种苗高生长分为出苗期、幼苗期、速生期和生长后期4个时期,速生期苗高、地径生长量均达到全年最大,分别占全年总生长量的72.8%和45.3%。冬播与春播对观光木场圃发芽率差异不大,分别为56%和55%,但冬播能提高苗木的生长量和苗木质量。

Using field testing method, the growth rules of annual seedling of Tsoogiodendron odorum and the growth effects of annual seedling of it in the different seedtimes were studied, the results are ： The high growth of annual seedling of Tsoogiodendron odorum was divided into four phases： the phase coming up out of land, the young phase, the rapid growth phase and the growth anaphase. The growth quantity of seedling height and ground diameter are maximal in the rapid growth phase and account for 72.8＂% and 45.3 % of total growth quantities of height and ground diameter respectively. Field germinating ratio were rarely affected by different seedtimes, but seeding in the winter can enhance the growth quantity and quality of seedling of Tsoogiodendron odorum.