摘要
以15N标记尿素及用其制成的有机-矿质材料控释尿素为供试肥料,探讨其在黑土水稻田上使用后水稻对N的吸收利用及水稻产量的变化。结果表明:控释尿素比普通尿素氮肥利用率提高了3.64%~19.92%,土壤中N的残留量增加6.37%~20.86%,可提高水稻产量8.66%~25.70%。
Using 15N-urea and the controlled release 15N-urea coated with organic-mineral materials as vested fertilizers,we investigated the effect of controlled release urea application on the N uptake and rice yield grown in the paddy field of chernozem. The results showed that the controlled release urea could increase urea-15N efficiency by 3.6419.92%,the soil residual N of urea-15N by 6.3720.86%, and the rice yield by 8.6625.70% as compared to urea.
出处
《土壤通报》
CAS
CSCD
北大核心
2003年第6期525-528,共4页
Chinese Journal of Soil Science
基金
国家"863"计划重大课题(2001AA246021)