中文摘要：

[目的]明确冬种马铃薯的生长发育规律,为提高冬种马铃薯的产量和品质及推进广西冬种马铃薯产业发展提供理论依据.[方法]以冬种马铃薯主栽品种费乌瑞它和广西选育品种桂农薯1号为研究对象,观测其株高、茎粗、叶干重、茎干重、块茎数和块茎干重等6个关键生长指标的变化动态.[结果]两个参试冬种马铃薯的生长发育指标呈规律变化,株高、茎粗、块茎数和块茎干重等4个指标均发生三段式的S形变化规律,叶干重和茎干重则呈倒U形变化规律;地上＂源＂器官（叶、茎）与地下＂库＂器官（块茎）呈极显著（P〈0.01）或显著（P〈0.05）相关.[结论]可将冬种马铃薯生长发育阶段分为5个时期,即出苗期、现蕾期、块茎形成期、块茎膨大期和块茎成熟期,生产上可依据不同生长时期的特点安排生产管理,使地上＂源＂器官和地下＂库＂器官相协调,达到增产增收的目的.

英文摘要：

[Objective]Growth and development regulation of winter-planting potato was studied in order to provide theoretical guidance for improving yield and quality of winter-planting potato and promote the development of potato in-dustry. [Method]Major potato variety Favorite and new variety bred in Guangxi Guinongshu 1 were used as study materials. The dynamic changes of six key growth indexes were observed, including plant height,stem diameter,leaf dry weight,stem dry weight, tuber number and tuber dry weight. [Result]The potato growth indexes showed regular changes in the two winter-planting varieties. The four important indexes, namely plant height, stem diameter,tuber number,and tuber dry weight showed a three-period S pattern variation, and leaf dry weight and stem dry weight presented a U shape variation. Organs above the ground（leaf and stem） and the ones underground（tuber） were extremely significantly（P〈0.01） correlated or significantly（P〈0.05） correlated . [Conclusion]The growth stage of winter-planting potato can be divided into five stages,namely seedling stage,budding stage,tuber formation stage,tuber expansion stage,and tuber maturation stage. In actual cultivation, management can be arranged based on the features of different growth stages, to coordinate the relation-ship between organs above ground and organs underground,and increase yield and benefits.