化肥"控失"对作物氮素农学利用率的影响

我国氮肥用量大, 氮肥农学利用率低,大量的氮肥流失直接和间接地威胁着生态环境.新型"控失"化肥兼顾了农业生产和环境保护的需要,具有节本增效,减量减排的作用.在参与2007年"控失"化肥大田联合试验示范的12个示范区中选取6个区,研究"控失肥"的氮肥农学利用率.结果表明:与习惯性施肥相比,"控失复合肥"氮肥农学利用率提高29.46-217%;与普通尿素相比,"控失尿素"氮肥农学利用率提高6.13-43.81%,"控失肥"明显提高了氮肥农学利用率,具有在农业生产中推广的前景.

Influence of "Lose-control" of Fertilizer on Nitrogen Agronomic Utilized Coeffciency of Crop

Chinese nitrogen fertilizer has the large amount of usage and low rate of agronomic utilization rate,so the large amount of nitrogen fertilizer loss threaten the entironment.A novel fertilizer,the lose-control fertilizer,gives attention to the agricultural production and environment protection,having the role of cutting cost,synergism,decrement and discharge reduction.Six areas were chosen from the twelve demonstration areas of making the field combination text and demonstration in 2007 to study the nitrogen fertilizer's agricultural utilization rate of lose-control fertilizer.The result shows: the lose-control fertilizer's nitrogen fertilizer's agriculture utilization rate increases29.46-217% compared with habitual fertilization.Compared with the common urea,lose-control urea's nitrogen agriculture utilization rate increases 6.13-43.81%.The lose-control fertilizer improves the nitrogen agricultural utilization rate and has the prospect of extension in the agricultural production.