东京野茉莉苗期生长节律

Study of Growth Rhythm of Reserved Seedlings of Styrax tonkinesis

以能源树种东京野茉莉为研究对象,研究东京野茉莉幼苗在不施肥和施肥情况下年生长节律。东京野茉莉苗高增长呈"S"型增长模式,苗木增长出现缓慢期、速生期和停滞期3个时期。苗速生期起点为5月下旬,持续至9月中旬,在5月下旬苗高生长最快。不同施肥处理的1年生幼苗,年生长节律均呈现"S"型曲线。在不同施肥处理中,施尿素的植株长势最好,不施肥的植株长势最差。

The growth rhythm of Styrax tonkinesis was studied. Through statistical analysis of plant height growth, ＂S＂-type pattern of growth was showed and the growth of Styrax tonkinesis in the nursery was slow, fast and stagnation period. The fast growth period of plant height started from the late May, lasted to the middle of Sept. and the maximum growth point was in the late May. By using different fertilizers,the growth patterns were all ＂S＂-type pattern. The growth of plants which were fertilized urea was the best, the growth of others which were not fertilized was the worst.