论文部分内容阅读
近两年来,河北省易县农业局在白马乡和梁各庄镇进行了甘薯测土配方施肥试验示范,通过土壤养分测定,综合考虑土壤供肥性能、作物需肥规律和肥料效应,在有机肥为基础的条件下,提出氮、磷、钾肥的适宜量和比例,以及相应的施肥技术,提高甘薯产量,减少肥料资源浪费。据试验示范结果初步表明,在当前土壤地力水平条件下,当季甘薯产量对肥料的施用效应不明显。盲目施肥,只能造成肥料的浪费和对环境的污染,造成农民生产投入成本的增加。但由于当地土壤土层较薄,砂性强,土壤保水保肥能力差,所以增施有机肥料,合理调控氮磷钾肥料对促进甘薯产业的可持续健康发展是必要的。
In recent two years, Yi County, Hebei Province Bureau of Agriculture in Baima and Lianggezhuang sweet potato soil testing and fertilization test demonstration, soil nutrient determination, comprehensive consideration of soil nutrient performance, crop fertilizer and fertilizer laws, organic Fertilizer-based conditions, put forward the appropriate amount and proportion of nitrogen, phosphorus and potassium fertilizer, and the corresponding fertilization technology to improve sweet potato production and reduce fertilizer waste. According to the pilot demonstration results initially showed that the current level of soil fertility conditions, seasonal sweet potato production of fertilizer application effect is not obvious. Blind fertilization can only result in waste of fertilizers and pollution of the environment, resulting in increased input costs of farmers’ production. However, due to the local soil layer is thin, strong sand, poor soil water retention and fertilizer, so the increase of organic fertilizer, a reasonable regulation of nitrogen, phosphorus and potassium fertilizer to promote the sustainable and healthy development of sweet potato industry is necessary.