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利用 15N示踪对肥效调节肥料 (CAF)中氮素的利用率作了调查 ,结果表明 CAF中氮利用率以及回收率均比常规肥料提高一倍左右 ,其中氮素溶出速率与作物需肥规律比较吻合 .田间小区试验及大面积推广示范结果也表明 CAF在各种作物上有显著的节氮和省工效果 ,因而能显著提高经济效益
The 15N tracer was used to investigate the nitrogen use efficiency of fertilizers (CAFs). The results showed that the nitrogen utilization rate and the recovery rate of CAFs were both increased by about one time compared with those of conventional fertilizers. The nitrogen dissolution rate and the rule of crop fertilizer requirement Compared with field experiments and large-scale popularization of demonstration results also show that CAF in a variety of crops have significant nitrogen and labor-saving effects, which can significantly improve economic efficiency