红花玉兰播种育苗技术的初步研究

红色系玉兰群红花玉兰新种Magnolia wufengensis和多瓣红花玉兰新变种Magnolia Wufengensis var．multitepala的发现具有重要的科学意义和开发价值。作为一个类型十分丰富的红色系列类群，在与原产地自然条件差异很大的武汉、咸宁大田育苗获得成功和在北京引种1年生苗正常生长说明，红花玉兰对气候的适应性较宽。在成宁1年生播种苗平均地径为0．69cm，平均苗高78．18cm；2年生和3年生移植苗平均地径和平均苗高分别为1．64，1．57cm和107．55，81．66cm，造成3年生移植苗比2年生小的原因是由于3年生苗是2002年在武汉东西湖苗圃地播种育苗和2003年移植（苗圃地土壤肥力不高），2004年又集中移植到咸宁所致，说明红花玉兰育苗需要较好的水肥条件。由于红花玉兰类型多样，而2001—2003年在原产地采集的种子是混系种子，因此需要进一步进行选优，单系采种或进行嫁接繁殖，培育成品种，同时要加快引种和区域化试验。表4参11

Seedling techniques of Magnolia wufengensis and M.wufengensis var.multitepala

The discovery of the new species of Magnolia wufengensis and the new variety M.wufengensis var.multitepala is of great importance for research and application.To expand the plants' application,the seeding techniques of the species and the variety were studied from 2001 to 2004 in Wuhan and Xianning City.The seeds harvesting,preservation and germination rates,the growth of one to three years old seedlings were investigated.In Xianning the average basal diameter of one-year-old seedlings was 0.69 cm and the average height was 78.18 cm.For two-year-old transplanted seedlings,the average basal diameter(1.64 cm) and average height(107.55 cm) was greater than three-year-old transplanted seedlings baving an average basal diameter of 1.57 cm and an average height of 81.66 cm.This indicated that seedlings of M.wufengensis and M.wufengensis var.multitepala needed rich fertilizer.Since the seed collected from the original source between 2001 and 2003 was a mixture of the species and the variety,further seed selection is required.Meanwhile,the introduction of the plants and regional experimentation should be developed.[Ch,4 tab.11 ref.]