水榆花楸1年生苗生长过程的研究

通过对水榆花楸1年生苗生长过程和生长节奏的研究,结果表明:水榆花楸1年生苗生长可分为4个时期,加速生长期是在6月中旬至8月上旬,高峰在7月上旬和中旬,速生期持续时间为70d;苗高生长量达到3.5mm,占总生长量的38.0%。地径生长量在速生期占总生长量的38.7%。

Growth Process of One-year-old Sorbus alnifolia Seedlings

Growth process and growth rhythm of one-year-old Sorbus alnifolia seedlings was studied.Result shows that:the growth of one-year-old Sorbus alnifolia seedlings can be divided into four periods.Growing period is in mid-June to early August;the peak is in early July and mid July;fast growing period is 70 d;height growth reach 3.5 mm;the total growth is 38.0%.Growth of ground diameter constitute 38.7% of the total in fast-growing peri-od.