【摘要】 本文对梨树县配方施肥数据进行汇总分析,结果表明:从1982年土壤普查后,土壤有机质含量、碱解氮含量、速效磷含量、速效钾含量均有增加的趋势。通过应用配方施肥技术在梨树县主要类型区土壤得出了施肥量与产量的效应方程。在中部黑土区667 m2施N-P2O5-K2O:13.26 kg-5.46 kg-5.64 kg,达最高产量644.7 kg;在西北部风沙土区667 m2施N-P2O5-K2O:13.26 kg-4.57 kg-7.91 kg,达最高产量582.5 kg;在南部棕壤区667 m2施N-P2O5-K2O:12.4 kg-8.33 kg-4.08 kg,可获得最高产量699.58 kg。综合全县来看,667 m2施纯N14.38 kg、P2O55.28 kg、K2O 6.43 kg,此时可获得最高产量637.14 kg。在梨树县主要农区平均1kg肥料增产粮食9.27 kg,肥料增产贡献率由高到低的顺序为:氮肥>磷肥>钾肥,从不同类型区来看,化肥增产排序为北部风沙土区>南部棕壤区>中部黑土区。更多还原

【Abstract】 Statistics of fertilization in Lishu County was collected and analyzed in the paper.The results showed that after soil survey in 1982,soil organic matter content,nitrogen content,available phosphorus,available potassium were increased.Fertilization technology according to the main types of soil in Lishu come to effect fertilization and yield equations.In black soil district the fertilization of N-P2O5-K2O was 13.26-5.46-5.64 kg/667 m2,the highest yield was 644.7 kg;in north-west sandy soil areas the fertilization of N-P2O5-K2O was 13.26-4.57-7.91 kg/667 m2,the highest yield was 582.5 kg;in the southern brown soil zone the fertilization of N-P2O5-K2O was 12.4-8.33-4.08 kg/667 m2,for maximum yield was 699.58 kg.When the county was accounting as a whole,the fertilization of pure N14.38kg,P2O5 5.28kg,K2O 6.43kg,the maximum yield was 637.14 kg.In main grain production areas of Lishu,input of 1 kg fertilizer achieved 9.27 kg increase of grains.Fertilizers contribution rate to yield increase decreased in such order: nitrogen> fertilizer> K.According to different types of areas,yield increase by fertilizer application in such order: wind sand soil area in the north > brown soil zone in the south > black soil area in the central.更多还原