微晶化磷矿粉在不同类型土壤上的释磷效应

Fertilizer Research of Micro-Crystalline Phosphate Rock Powder on Different Types of Soil

[目的]为了研究磷矿粉在不同土壤上的磷释放规律。[方法]选取5种典型类型土壤进行盆栽试验,于油菜苗期取土样和植株样进行化学分析。[结论]微晶化磷矿粉的肥效在红壤、棕壤以及水稻土等偏酸性土壤上比在褐土和潮土等中、碱性土壤上效果好;在红壤等酸性土壤上施用2倍及以上于过磷酸钙量的微晶化磷矿粉对土壤及油菜的影响效果明显,在褐土等偏碱性的土壤上微晶化磷矿粉的肥效还有待提高。[讨论]该研究可以为微晶化磷矿粉的广泛施用提供依据。

[Objective]The research aimed to study the phosphorus release rule of phosphate rock powder in different types of soil. [Method]Five typical types of soil were selected to carry out the pot experiment,and soil samples and plant samples were taken for chemical analysis in the stage of rapeseed seedling. [Result] The fertilizer on acidic soils such as red soil,brown soil and paddy soil was better than on alkaline soils such as cinnamon soil and aquic soil. Effect of micro-crystalline phosphate rock powder more than twice the amount of calcium superphosphate on acidic soils such as red soil was significant to rape,while it should be improved on alkaline soils such as cinnamon soil. [Conclusion] The research could provide the basis for the wide application of micro-crystalline phosphate rock powder.