摘要： 马铃薯茎叶和块茎中的氮、磷等元素，主要通过根系从土壤中吸收并转移到各器官；母薯的矿质元素有一部分也被转运到新的器官中去。马铃薯在不同生育期对氮、磷、钾的吸收是：以出苗到块茎增长期是逐渐增加的。幼苗期至块茎形成期增长速度最快，到块茎增长期达到高峰。在该试验条件下，当肥料和密度达到适宜时，参试因素对马铃薯产量影响的大小程度依次为K肥>N肥>P肥。

关键词: 马铃薯, 施肥量

Abstract: Muneral elements as nitrogen,phosphorus.etc.in stems,leaves and tubers of potatoes are mainly assimilated and transferred to different organs from soil through root system;Parts of mineral elements in female tubers are transferred to new organs as well.The assimilation for nitrogen,phosphorus and potassium at different growing period is increased gradually from germination to tuber growing,with the fastest increase from baby plant to tuber formation,and reaching the highest at the tuber increasing period.Under this experimental condition,when fertilizer and intensity are in proper condition,the effect on potato yield by tested elements is in the following order:K fertilizerN fertilizerP fertilizer.

Key words: Potato, Quantity of fertilizer application

中图分类号: 

• S532.062

• S147.2