刺槐是我省荒山造林的重要树种,特别是黄土高原干旱地区的重要造林树种。每年种子需要量很多,而刺槐硬粒(俗称铁子)比例较大,硬粒种子种皮特别致密,吸水发芽较困难。不少生产单位往往将硬粒随同烫种后已膨胀的种子一起播种,或者将硬粒倒掉,造成浪费。如何采用简单有效的方法,既不杀伤种子或少杀伤种子,又能促使硬粒 Robinia pseudoacacia is an important species afforestation in the barren hills of our province, especially in the arid areas of the Loess Plateau. Need for a lot of seeds each year, and acacia hard particles (commonly known as iron) a larger proportion of hard seed seed coat is particularly dense, more difficult to absorb water and sprout. Many production units tend to sift hard particles with expanded seeds that have been hot-pressed, or they can be dumped to cause waste. How to use a simple and effective method that neither kill the seed or kill the seed, but also to promote the durum