PP333浸种处理对高羊茅幼苗生长的影响

以高羊茅(Festuca arundinacea Schreb)为材料,以不同浓度的PP_(333)处理液(0、10、50、100、300、500、700和1 000 mg·L~(-1))浸种处理,测定其发芽率、发芽指数、活力指数,在幼苗生长过程中分别调查其株高、根系生长、生物量。结果表明:浓度为300 mg·L~(-1)的PP_(333)浸种处理后,显著抑制株高,使总根长增长速度加快、根体积增长最快,对根面积的影响较大,分蘖数最多;播种60 d时,300 mg·L~(-1)处理组显著提高了根冠比、根系活力和根鲜重。

Effects on Seedling Growth of Festuca arundinacea Schreb by Seed Soaking in PP333

With Festuca arundinacea Schreb for the materials,the germination rate,germination index and vitality index were measured by seed soaking in different concentrations of PP_（333）（0,10,50,100,300,500,700 and 1 000 mg·L~（-1））.In the course of seedling growth stem length,root growth and biomass were investigated.The results showed that：when seed soaking in 300 mg·L~（-1） PP_（333）,it could significantly inhibit the height,accelerate the growth rate of total root length,make the growing of the root volume the fastest,have a greater impact on the root area and the most tillers number.300 mg·L~（-1） treatment group significantly increased ratio of root and shoot,root activity and the fresh root weight in sowing 60 days.