论文部分内容阅读
在湖北省中稻上开展了控释尿素不同施用量的田间试验。研究结果表明,施用控释尿素不仅可以提高中稻产量,而且可以提高氮肥的农学效率及表观利用率,控释尿素70%的用量与普通尿素100%的用量效果相当,并随着控释尿素施用年限的增加,控释尿素施用效果越显著,控释尿素至少可以减少氮肥用量30%。
A pilot field experiment was conducted on middle rice in Hubei Province to control different application rates of urea. The results showed that the application of controlled release urea can not only improve the yield of middle rice, but also improve the agronomic efficiency and apparent utilization efficiency of nitrogen fertilizer. The amount of controlled release urea 70% is equivalent to that of common urea 100%, and with the controlled release urea The increase of the application years, the more obvious the effect of controlled release urea application, controlled release urea can reduce nitrogen dosage at least 30%.