Study On The Present Situation And The Changes Of Soil Testing And Fertilizer Recommendation In Sichuan Province

Based on measured soil fertilizer project in Sichuan province, farmers in Sichuan province from 2005 to 2005 is studied in application present situation, the main crop fertilization conditions, analyzes the soil testing fertilization dosage between formula fertilization of sichuan province in recent years, fertilizer efficiency and the change and the impact of fertilizer cost, etc, for the future implementation of the measured soil fertilizer to provide certain theoretical basis and reference. The results show that:1. The Sichuan province applying pure nutrients of Nfertilizer per acre per year on average 19.4 kg, P2O5 fat 8.4 kg,5.6 kg K2O fat; Applying average of N:P2O5:K2O content ratio is 3.5:1.5:1; Applying organic manure in RMB $content for 1060 kg; Compound fertilizer and elemental fertilizer applying sample ratio is 0.9:1; Fertilizer cost is 170.3 yuan.2. rice per mu of average annual quarterly applying pure nutrients of N, P2O5 fat 11 kg weight 4.9 kg,3.3 kg K2O fertilizer, organic fertilizer applying physical content is 511 kg, quarterly 511 kg per mu, the fertilizer efficiency of PFP value is 26.6, the fertilizer cost is RMB 85. Per mu of wheat per year on average quarterly applying pure nutrients of N, P2O5 fat 10.2 kg weight 4.1 kg,3.1 kg K2O fertilizer, organic fertilizer applying physical content is 519.2 kg, quarterly 288 kg per mu, the fertilizer efficiency of PFP value is 16.6, the fertilizer cost is RMB 77. Per mu of corn per year on average quarterly applying pure nutrients of N, P2O5 fat 13.7 kg weight 4.6 kg,2.0 kg K2O fertilizer, organic fertilizer applying physical content is 766 kg, quarterly 390 kg per mu, the fertilizer efficiency of PFP value is 19.2, the fertilizer cost is RMB 103. Rape per year on average per mu of quarterly applying pure nutrients of N, P2O5 fat 9.8 kg weight 4.2 kg,2.9 kg K2O fertilizer, organic fertilizer applying physical content is 524.9 kg, quarterly 163 kg per mu, the fertilizer efficiency of PFP value of 9.6, fertilizer cost is RMB 86.3. participate in measured soil fertilizer project sample in 2010 than in 2005 pure nutrients per acre N fertilizer applying and P2O5 fat content decreased by 23.7% and 18%, respectively, fertilizer cost reduced by 5%, K2O per mu pure fat years converting nutrient dosage and organic fertilizer rates increased by 32% and 32% respectively, fertilizer efficiency (PFP) increased by 17%.