目的:研究确定宁夏贺兰山东麓梭梭育苗的适宜播种期。方法:设6个播期,播种38天后调查各播期梭梭苗生长情况,同时记录气温变化;1年后调查各播期梭梭株高、根长、茎基粗。结果: 播种38天后调查,5月初播种的梭梭苗生长速度较快;3月下旬至4月上旬播种的梭梭苗生长量显著高于其它播期;结论:在宁夏进行梭梭育苗,3月下旬至5月上旬均可播种,3月下旬至4月中旬播种,梭梭苗生长量最大;4月下旬至5月上旬播种,梭梭苗生长速度最快。

The best sowing time of Haloxylon ammodendron in the east of Helan Mountain in Ningxia autonomy is studied. Six different sowing time were designed, then the growing of seedling sowed at different time was investigated respectively after 38 days and the height and the root conditions of them was inspected 12 months later. As a result, those which were sowed at the beginning of May grew faster than others and those which were sowed during the last ten days of March and the fist ten days of April have larger biomass. Therefore, the last ten days of March and the fist ten days of May'are good for seeding Haloxylon ammodendron in Ningxia. A higher growing speed can be obtained ii they are sowed during the end of April and the beginning of May, and they will have a larger biomass if sowed during the last ten days of March and the first ten days of April.

国家科技部“十五”科技攻关计划项目(2001BA701096b)肉苁蓉繁育研究国家科技部西部专项(2002BA901A32)子课题,肉苁蓉规范化种植研究与示范