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苕子属于豆科,是绿肥作物,其种子硬实率比较高,特别是新收获的种子。因其硬实种子的种皮具有不透水性,基本不能吸收水分,而影响发芽率的准确性,无法正确估价种子实际应用价值。而采用机械损伤法破除硬实测定苕子种子发芽率可取得比较满意的结果。1 试验材料与用具1.1 试验材料光叶紫花苕子(新收获,经浸水
Rudbeckia belong to the leguminous plant, which is a green manure crop with a high rate of hardwood seed, especially newly harvested seeds. Due to the impermeability of the seed coat of hard seeds, the water can not be absorbed basically, which affects the accuracy of the germination rate and can not correctly evaluate the practical application value of the seeds. The use of mechanical damage method to get rid of hard to determine the seed germination rate can get more satisfactory results. 1 Test Materials and Utensils 1.1 Test Materials light leaves Vetch (newly harvested, soaked