agricultural melioration农业土壤改良
soil melioration土壤改良
land melioration土地改良
idioplasm melioration种质改良
Melioration Theory改善理论
channel melioration渠道改进
coefficient melioration系数改进
melioration measurement改良措施
The melioration of saline and alkali soils is a difficult topic faced in the world. For long time, in the study filed of saline and alkali soil ecology, the research has been focused on plant physiology and bio-ecology.
盐渍化土壤改良与利用是世界范围内所面临的难题，长期以来在盐渍化土壤生态学研究领域内，人们以实现生物改良与利用为主要目标，开展了许多盐生植物生理生态的科学研究。
参考来源 - 盐渍化极端生态环境条件下土壤微生物生态及放线菌资源The adulteration and melioration experiment of the materials prepared by acid-treating method were studied, the results proved that the material treated had an excellent steady property, but less reversible capacity.
本论文对由酸处理法合成的Li_xMnO_2材料进行了掺杂改性实验，结果表明，改性后的材料虽然循环性能有显著改善，但比容量会有所减少。
参考来源 - 锂离子电池正极材料层状LiN（名词） the act or an instance of improving or the state of being improved 改善