被覆肥料旱地氮素溶释试验研究

Experiment on Nitrogen Release on Coated Fertilizer in Dry Farmland

日本新研制的被覆氮素肥料 ,具有先进的氮素溶释调控性能。在崎玉县农业试验场就广泛施用的チッ ソ旭制LPS 10 0型肥料的氮素溶释规律 ,进行了试验研究。结果表明 :(1)该肥料氮素溶释趋势呈S型曲线 ,表现出明显的氮素溶释调控性 ;(2 )该肥与土壤充分混匀后 ,氮素溶释率相对降低 ,降低最大程度为 11 3%。

The new manufactured coated nitrogenous fertilizers in Japan were characterized by the advanced controllable release of nitrogen.During the advanced studies in Japan,an experiment was done to study the law of the nitrogen release of widely applicated fertilizer(N-KIAOKUSEI LPS100)in the SAITAMA Agricultural Testing Ground.The results were as follow:(1)Nitrogen release trend of the coated fertilizer showed the curve of Type-S,and obviously,has the controllable release characteristic.(2)When mixed fully with soil,relatively can lower the rate of nitrogen release.The lowered maximum degree is 11 3%.