缓控释肥料的氮素利用率及控制效果研究

Study on the N Utilization Ratio and the Control Result of New Slow Controlled Release Fertilizers

对自制的6种缓控释肥料（NAP，NAF，NAX；NHP，NHF，NHX）的肥效进行盆栽试验研究。通过对油菜的生物量及氮索利用率分析得出：腐殖酸作为抑制剂在一定浓度和量的范围内效果比较好；6种自制肥料的氮素利用率在29．54％，46．43％；效果最好的肥料品种是NAP。本研究对利用脲酶抑制剂制成缓控释肥料，使作物增产、有效地提高氮索利用率、减轻环境污染及确保农业可持续发展均提供了科学的理论依据。

This text carries on the pet experiment to study on the efficiency of six kinds of Slow controlled release fertilizer made by ourselves（NAP, NAF, NAX ; NHP, NHF, NHX）. We found from the analysis of the living beings amount in rape and N plain utilization ratio that the result indicates the restrain resuh of humic acid in certain density and range of quantity is better. N utilization ratio of the six fertilizers are 29.54 % - 46.43 %. And the best fertilizer is NAP. The research has offered the scientific theoretical foundation for making slow controlled release fertilizer, in which increase crop production, improving effective nitrogen plain utilization ratio, increasing economic efficiency, decreasing the environmental pollution, and guaranting agricultural sustainable development.