中文摘要：

以毛乌素沙地4种典型植物油蒿（Artemisia ordosica）、角蒿（Incarvillea sinensis）、羊柴（Hedysarum laeve）和本氏针茅（Stipa bungeana）种子为试验材料,对不同KNO3处理下4种植物萌发特性的差异进行了观测.结果表明,KN03处理对各物种萌发的效应存在差异,0.5％ KNO3处理显著促进油蒿种子萌发,而对于羊柴、本氏针茅和角蒿,KN03处理则表现为显著抑制效应,抑制浓度分别为0.2％、1％和1％.

英文摘要：

With seeds of four sandy plants, that are Artemisia ordosica, Incarvillea sinensis, Hedysarum leave and Stipa bungeana as materials, the differences in germination characteristics of four species under KNO3 treatments were observed. The results showed that the effects of KNO3 treatments on four species were different, which was positive on the germination of A. ordosica at 0.5 % KNO3 treatment, while was negative on the germination of I. sinensis ,H. leave and Stipa bungeana at 0.2% ,1% ~ 1% KNO3 treatment,respectively.