马铃薯氮素管理策略

Strategy for Potato Nitrogen Management

以高产、高效为目标的马铃薯生产需要合理的氮素管理。本文分析了马铃薯氮肥利用现状,针对存在的问题提出了氮素管理的思路,即在了解马铃薯的氮素需求规律、明确马铃薯农田氮素走向的基础上选择适宜的栽培措施。在氮素管理策略上,提出既要总量控制又要分期调控,实施关键生育期氮素精确诊断监测,采用合理的施肥方式,研发适合马铃薯的新型氮素缓/控释肥料。最后,对马铃薯氮素管理的研究方向进行了展望。

Rational N management in potato(Solanum tuberosum L.)production is taking high yield and high efficiency as its objective.This paper analyzes the present status of N utilization in potato and puts forward thoughts according to the existing problems in potato N management,as selecting proper cultivation measures on the basis of understanding potato requirement rule for nitrogen and N flow direction in potato field.As for the strategy of N management,this paper puts forward ideas of controlling the total N amount along with regulation by stages,effecting precise diagnosis of N nutrition status at key growing period,adopting rational fertilization method,studying and developing new slow/controlled-release nitrogen fertilizers for potato.Before ending,the paper prospects the research direction for potato nitrogen management.