土壤调理剂中添加硅和有机肥可抑制重金属离子从土壤向作物的转移，但目前并不清楚硅和有机肥如何通过影响土壤性质和微生态环境进而减少水稻的镉积累。本研究通过两地田间实验分析了含硅和有机肥的L型土壤调理剂对细菌和真菌群落多样性、土壤pH、有机质及有效硅含量的影响。结果表明，随着土壤调理剂中硅和有机肥含量的增加，两个试验点的水稻产量分别增加了16.8%~25.8%和6.8%~13.1%, 稻米Cd含量显著降低了8.2%~21.1%和10.8%~40.6%。土壤微生物组学分析证明与镉吸附、螯合相关的Firmicutes和Actinobacteriota细菌和与大分子物质降解有关的Basidiomycota真菌种群丰度的增加，有利于抑制土壤中镉的活性（土壤ESC-Cd降低了14.4%~14.8%和18.1%~20.6%），这与施用土壤调理剂引起有机质和有效硅含量增加有关。总之，L型土壤调理剂中的有机质和硅可通过调节土壤中镉钝化优势菌群，降低土壤镉有效性，最终减少稻米镉积累。

Skin grafting has been used as one of the most reliable tests to determine the genetic stability of laboratory animal such as mice and rats inbred line, but no identification of swine inbred lines by skin grafting has been reported. At present, Wuzhishan miniature pig (WZSP) inbred line has acquired the F24 individuals in China. In order to verify whether WZSP inbred line had been cultivated successfully, allogeneic skin grafts and related research were performed on F20 individuals of WZSP inbreeding population, compared with a control group of autologous transplantation. We observed the transplant recipients’ wounds, detected peripheral blood-related indicators interleukin-2, 4 and 10, CD4+ and CD8+ lymphocytes, and conducted hematoxylin-eosin (HE) and Masson’s staining of skin to judge whether the immune rejection reactions occurred within 28 days after transplantation. Chr. 7 genomic heterozygosity of 48 WZSP individuals from F20 to F22 was analyzed by high-density single nucleotide polymorphism (SNP) chips (60 000 SNPs). The result showed that there were no significant differences in graft skin, the plasma interleukin-2, 4, 10, CD4+ and CD8+, HE and Masson’s staining results between the allograft and autograft groups, and no immune rejection occurred on the allograft group. We found that 11 genes in Chr. 7 of major histocompatibility complex (MHC) I and MHC II were homozygous which confirmed that immune antibody of the allograft and autograft groups were highly identical and also provided a theoretical basis to no immune rejection occurred on the allograft in the inbred WZSP. The result proved that the WZSP inbred line had been cultivated successfully for the first time in the world. The test methods also provide a scientific basis for the identification of swine and mammal inbred lines.