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1992-1994年三年来,从内蒙、新疆和甘肃等省(区)的沙区地带引种来的8种珍稀濒危植物,现保存有性和无性繁殖苗近千株,大多已开花结实,经过对沙区8种珍稀濒危植物播种育苗研究认为:准噶尔无叶豆、矮沙冬青、银沙槐3种植物种皮坚硬吸水困难,播前须用浓硫酸处理后再经温水浸泡,才能吸水膨胀发芽;沙生柽柳、半日花、裸果木、绵刺、四合木等植物,种子质地松软,无需特殊处理均可干播发芽,播深适中均能取得较好出苗率。
In the three years from 1992 to 1994, eight rare and endangered plants introduced from the sandy areas of Inner Mongolia, Xinjiang and Gansu provinces (regions) now contain nearly 1,000 strains of sexual and vegetative seedlings, and most of them have flowered. According to the research on sowing seedlings of 8 species of rare and endangered plants in sand area, the seed coat of three kinds of plants, such as non-leaf bean, dwarf shrub and silver sand locust in Junggar, is hard to absorb water, and must be treated with concentrated sulfuric acid and then soaked in warm water before sowing. Saxiang tamarisk, half-day flowers, bare fruit, cotton, Tetraria and other plants, soft seed texture, without special treatment can be dry sowing, sowing moderate can achieve better emergence rate.