ameliorant

The study showed that all ameliorant treatments could decrease soil acidity in loquat garden and peach garden except the treatment of superphosphate, ameliorant treatments decreased the bioavailability of Pb, Cd in soil, and reduced the contents of Pb, Cd in fruits.

研究发现，除单施过磷酸钙外，其它改良剂处理都能降低两个园区的土壤酸度，改良剂处理均降低了土壤中Pb、Cd的生物有效性，进而降低果品中的Pb、Cd含量。

Compare with farmer conventional fertilization optimized fertilization and optimized fertilization combined with ameliorant treatments can reduce the contents of nitrate nitrogen, available nitrogen and available P, optimized fertilization combined with Potassium humate is best.

与农民习惯施肥相比，优化施肥及优化施肥结合改良剂处理可以显著降低土壤硝态氮、碱解氮、速效磷含量，以优化施肥+腐植酸钾处理效果最好。

Therefore, the Company plans to take full advantage of the abundant raw material resources and broad market space of Yulin City to build desert ameliorant production line in Yuyang District.

基于此，该公司拟充分利用榆林市丰富的原料资源和广阔的市场空间，在榆阳区新建沙漠改良剂生产线。