Laboratory culture experiment with the same treatments as pot experiment but without plant was carried out synchronously under constant temperature ( 25 ? ? ) and 20 % soil moisture . to study the influence of inhibitors on the dynamic process of transformation and variation of availability of cd in soil , laboratory cultured soil was sampled in certain interval during the 128 - day cultured period for the analysis of cd availability and speciation . in adsorption - desorption experiment , the tested soil had fistly been cultured under constant temperature ( 25 1 ) and 20 % soil moisture for two months after the treatment according to the designed plan , then isothermal adsorption - desorption experiment was proceeded when the reaction between inhibitor and soil tended to be stable 石灰施用量對植株吸收鍋有顯著影響,植株各部位鍋含量k )與石灰添加量… , )的關(guān)系可以很好地用方程y叫( ax斗bx化)描述,石灰對植株鍋累積的調(diào)控存在一個最佳抑制效應(yīng)劑量,低于或高于這一劑量均不能達(dá)到最佳抑制效果,但對于不同植株部位和不同污染水平,最佳抑制效應(yīng)劑量不同;低用量下,單位石灰添加量對植株吸收鍋的抑制作用比高用量時大,因此若綜合考慮調(diào)控劑的施用成本及其對生物量的影響效應(yīng),則在本試驗條件下以施用石灰0