| Abstract: In consideration of the ineffi ciency of fertilizer and serious non-point source pollution, for the purpose of zero growth of chemical fertilizer, 'Agroleaf' controlled release fertilizer was introduced and used in snow bean and the growth period, botanical traits, disease and pests and yield were investigated. The results showed that 'Agroleaf' fertilizer had a certain promoting effect on the growth of snow bean with obvious effect of increasing yield. The optimal application amount was 60 kg per 667 m2, and the effect of reducing fertilizer amount was obvious with a reduction rate of 42.6%. So it was suggested to undertake 'Agroleaf' fertilizer producing extension in Tonghai county. |