Study on Formulated Fertilization of Film Mulching Garlic in Ledu County

In the paper,we studied the 3414 formulated fertilization design on the yields of garlic bolt and garlic bulb in Ledu county.The results showed that the yields of garlic bolt and garlic bulb increased gradually as the increasing of chemical fertilizer amount in Ledu county,but when the fertilizer application amount increased to a certain degree,the yields of garlic bolt and garlic bulb were reduced as the chemical fertilizer amount increased.Among the three fertilizers,the effect on improving yield of garlic bulb was as follows: phosphate fertilizernitrogen fertilizerpotash fertilizer.When two of nitrogen,phosphate and potassium fertilizers were used together,the yield of garlic bulb improved,and their improving effect on the yield of garlic bulb was as follows: PKNKNP.When the application amounts of nitrogen,P2O5 and K2O were 32.84,14.12 and 10.16 kg/667 m2 respectively,the best economic benefit was got,and the garlic bulb yield was 2 852.22 kg/667 m2.