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GIS based Fertilizer Recommendations for Maize on a County Scale

机译：玉米玉米玉米肥料建议玉米

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Regional fertilizer recommendation is urgent needed for the National Soil Testing and Fertilizer Recommendation Program, which started at 2005 and has already covered most counties of agricultural production area in China. This paper took DongChangFu district, LiaoCheng city, Shandong province as an example, established a Geographic Information System (GIS) based fertilizer recommendation system for maize production. The results shown that, through Ordinary Kriging interpolation approach, agricultural soils in this district could be classified into three management zones for phosphorus fertilizer recommendation according to the soil available phosphorus testing (Olsen-P method) value <10, 10-30, and >30 mg/kg, respectively. Recommended phosphorus fertilizer rates (P{sup}2O{sup}5) were 143, 95, and 48kg/hm{sup}2 respectively. Management zones for potassium fertilizer recommendation were created according to soil available potassium testing (NH{sup}4OAc-K method) value <50, 50-100, and >100mg/kg, respectively, while recommended potassium fertilizer rates (K{sup}2O) were 90,60 and 30kg/hm{sup}2, respectively. In conclusion, regional recommendations for phosphorus and potassium fertilizers are practicable on a county scale.
机译：国家土壤检测和肥料推荐方案迫切需要区域施肥建议，该方案于2005年开始，已涵盖中国的大多数农业生产区。本文以山东省聊城市东昌府区为例，为玉米生产建立了地理信息系统（GIS）肥料推荐系统。结果表明，通过普通的Kriging插值方法，该地区的农业土壤可以根据土壤可用磷试验（Olsen-P方法）值<10,10-30和>，分为磷肥肥料推荐的三种管理区。 30毫克/千克。推荐的磷肥速率（P {SUP} 2O {SUP} 5）分别为143,95和48kg / hm {sup} 2。钾肥推荐的管理区分别根据土壤可用钾试验（NH {SUP} 40AC-K法）值<50,50-100和> 100mg / kg，而推荐钾肥率（K {SUP}） 2O）分别为90,60和30kg / hm {sup} 2。总之，对县级的磷和钾肥的区域建议是可行的。

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