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出 处:《土壤通报》2010年第2期367-372,共6页Chinese Journal of Soil Science
基 金:农业部黄淮海中低产地区经济合理施用磷肥技术及国家攻关项目钙镁磷肥改性复合肥料经费资助
摘 要:3种不同性质磷肥在石灰性潮土上的用量定位试验,明确了其肥效、后效、残磷后效和增施磷肥效果之间的相互关系。同时还明确了增磷与残磷增产量之间的比值变化规律。还从该大差额磷肥用量的试验结果中,总结出对"作物施磷"、"土壤施磷"和"储备施磷"的概念及量的界定,并对其进行了评价。通过此试验还发现,在石灰性潮土上使用强碱性的钙镁磷肥时对土壤酸碱度和作物产量的不良影响。With positional experiment of 3 kinds phosphate fertilizers in different application rates in calcareous fluvaquentic soil,the relationship between the effect of phosphorus fertilizer increment and P fertilizer efficiency,carryover effect of P fertilization and carryover effect of residual phosphate fertilizers were revealed.At the same time,the variation ratio between phosphorus increment and the amount of yield increment resulted from residue phosphate was clarified,too.From the wide rates P fertilizer experiment,it was summarized that the concepts of "fertilization to crops","fertilization to soils" and "fertilization to restore" and their quantities were delimitated,which also being evaluated as well.This experiment also revealed that the bad effect of calcium-magnesium phosphate on soil acidity and crop yield in calcareous fluvaquentic soil.
分 类 号:S143.2[农业科学—肥料学] S147.5[农业科学—农业基础科学]
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