山西马铃薯养分管理现状及问题分析

Analysis of the Status Quo and Problems of Potato Nutrient Management in Shanxi

对山西3个县17个村170户农民马铃薯的种植密度、肥料品种、施肥量、施肥次数、施肥方法等情况进行了调查及统计分析。结果表明,农户种植密度为2.900万~3.114万株/hm^2;施肥方法主要选择播种前撒施和沟施,施肥量的80%按照习惯施用、20%依据地力施用;氮磷钾肥养分投入量分别为:氮肥18~435 kg/hm^2,磷肥6~268.5 kg/hm^2,钾肥5.25~168.8 kg/hm^2。

The potato planting density, fertilizer variety, fertilizer amount, number of fertilization, fertilization method and so on of three counties, 17 villages, 170 farmers in Shanxi were investigated and analyzed. The results showed that the farmers planting density was 29 000- 31 140 plants/hm^2. Fertilization methods mainly were broadcasting before planting and furrow, the method of fertilizer rate80% according to the habit of fertilizer application, 20% according to soil fertilization. Potato nitrogen, phosphorus and potassium fertilizer situation of each household survey and nutrients NPK fertilizer inputed, respectively, amount of nitrogenous fertilizer 18- 435 kg/hm^2,phosphate fertilizer 6- 268.5 kg/hm^2, potassium application rate of 5.25- 168.8 kg/hm^2.