Abstract:
This text carries on the pot 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 result 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.
Key words:
Slow controlled release fertilizer,
N utilization ratio,
The living beings amount of the rape
CLC Number:
WANG Xiang-feng, LIU Shu-qing, NING Guo-hui. Study on the N Utilization Ratio and the Control Result of New Slow Controlled Release Fertilizers[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(S2): 38-41. doi: 10.3321/j.issn:1000-7091.2006.z2.009.