新型脲酶抑制剂的试验研究

STUDY ON NEW TYPES OF UREASE INHIBITORS

应用不同煤源及加工方式生产的二种腐植酸类物质作为脲酶抑制剂，进行了二年盆栽一年田间小区的试验研究。表明了选用煤炭腐植酸类物质作为脲酶抑制剂是可行的。它既能减缓尿素分解，以提高尿素利用率和减少氮素对环境的污染，又能显著地改善作物根系活性和对土壤养分的有效利用率。且其原料易得、加工简便，对环境无污染，对生物无毒害，并在开发利用风化煤之类资源的同时，又改善了环境条件。

Two kinds of humic acids derived from different coal sources have been studied for three years. The results show that it is feasible to use humic acids as urease inhibitors. They could slowly reduce the decomposition of urea, lessen nitrogen pollution of environment and significantly improve the activity of crop roots and the available uhlization fate of soil nutrients. Also humic acids could be got easily and have little harmful effect on environment and organisms. While exploiting weathered coal resotirce,it could improve environmental conditions.