A Preliminary Study on the Application Effect of Slow Release Fertilizer on Potato in Northwest Guizhou Province

An application test was conducted to study the application effect of HUANONG slow release fertilizer on potato.The results showed that the economic character,quantity and commodization rate after applying the slow release fertilizer on potato were apparently higher than that of applying normal fertilizer and formulated fertilizer.By applying the 581 kg/667 m2 slow release fertilizer to the potatoes,the yield-increasing effect was better and economic benefit increased significantly.Compared to the application of normal fertilizer,the 50 kg/667 m2 slow release fertilizer had made an increase of 581 kg/667m2 and the net income increased by 797 Yuan/667 m2.