模拟酸雨致酸土壤对小麦幼苗生长发育的影响

Effect of simulated acid-rain-induced acidification of soil on growth and development of wheat seedlings

摘要: 用模拟酸雨淋洗土壤,造成土壤酸化和盐基流失,然后播种小麦(Triticum aestivum)。幼苗长至5片叶子时的测定表明:幼苗的生物量、叶片叶绿素含量和光合速率均降低,次生根减少,根系活动下降。酸化土壤对根系生物量和某些生理活动的影响大于对地上部的影响。

Abstract: Treating the soil with simulated acid rain causes soil acidification and release of base ions.In such acidified soil,the generation of biomass and physiological activities of wheat(Triticum aestivum)seedlings were reduced.The effect of soil acidification on biomass and physiological activities of the root system is higher than that on those of the aerial parts.