宁南黄土丘陵区春小麦丰产施肥模式的研究  

Study On Optimum Model of Fertilizing for spring wheat in Loess Hilly Areas of South Ningxia

作　　者：李鼎新[1] 党增春[1] 徐学选[1] 

机构地区：[1]中国科学院水利部水土保持研究所

出　　处：《水土保持通报》1995年第5期29-34,63,共7页Bulletin of Soil and Water Conservation

摘　　要：宁南固原河川乡上黄试区，采用三因素五水平通用旋转设计，对影响春小麦产量的Ｎ，Ｐ２Ｏ５和Ｍ（有机肥）进行了试验研究。建立了两种农田系统春小麦丰产施肥的主效应方程。根据试验结果，利用微机田间模拟寻优得出了：两种农田系统春小麦每１ｈｍ２产量３０００ｋｇ和２４００ｋｇ丰产组合方案．根据这两种模式和所得到的１０２个和８８个不同因子配合下的不同产量水平，因地制宜地制定春播方案，指导生产，预测产量。The field trials were conducted in south Ningxia province by using regression design of gerneral rotation. By means of establishing mathematical model,the relationship among N,P2O5,M and yield was analysised.In addition,a system of optimum model of fertilizing N,P,and M were obtained,with which the output would be above 3000kg/ha in terrace and 2400kg/ha in tableland.Also,the limited line of fertilizer input were given:N 100.5kg/ha,P2O5105.0kg/ha,M 30 000kg/ha in terraces and N 110.0kg/ha,P2O5105.0kg/ha,M 30 000kg/ha in tableland.Those results could be used in practice to improve yield,save fertilizer and to forecast yield.

关 键 词：春小麦 施肥模式 黄土丘陵区 宁南山区 

分 类 号：S512.106.2[农业科学—作物学]