中国马铃薯2025，Vol.39Issue(5)：377-385,9.DOI:10.19918/j.cnki.1672-3635.2025.05.008
水氮处理对马铃薯产量形成及干物质分配的影响
Yield Formation and Dry Matter Allocation of Potatoes are Affected by Water and Nitrogen Treatments
摘要
Abstract
Potato(Solanum tuberosum L.)is one of the most important staple food crops in China and plays an essential role in national food security.Improving potato yield remains a major challenge in the development of the industry.Water and nitrogen are two key factors affecting potato growth and are also important agronomic factors that can be regulated artificially.In this study,a pot experiment was conducted using two processing potato varieties,'Atlantic'and'Dongnong 314',to investigate the effects of different water and nitrogen treatments on yield formation and dry matter distribution.Three soil water levels were established:normal water supply(W3,80%of soil maximum water-holding capacity),mild water stress(W2,65%of soil maximum water-holding capacity),and severe water stress(W1,50%of soil maximum water-holding capacity).Nitrogen treatments included no nitrogen application(N0,0 g/pot),medium nitrogen(N1,4.5 g/pot),and high nitrogen(N2,9.0 g/pot).Different water and nitrogen treatments had significant effects on single-plant tuber yield and tuber dry matter distribution in both varieties(P<0.05).Under normal water conditions,compared with no nitrogen application,the appropriate nitrogen application treatment(W3N1)significantly increased single-plant tuber yield,whereas compared with medium nitrogen application,increasing nitrogen application under water stress did not further improve yield.At 80 days after emergence,the tuber dry matter distribution ratios of'Atlantic'and'Dongnong 314'under all conditions were higher at the medium nitrogen level than at the non-nitrogen level and the high nitrogen level,with significant differences from the non-nitrogen level(except for W1 and W2 of'Dongnong 314').These results indicate that an appropriate water-nitrogen combination is beneficial for promoting dry matter allocation to tubers.This study provides pot-experiment-based evidence for elucidating the effects of water-nitrogen coupling on potato yield formation.关键词
马铃薯/水氮耦合/施氮量/源库关系Key words
potato/water-nitrogen coupling/nitrogen application rate/source library relationship分类
农业科技引用本文复制引用
樊一茹,常远,魏峭嵘,尹燕斌,任荣荣,陈晓锋,唐海涛,石瑛..水氮处理对马铃薯产量形成及干物质分配的影响[J].中国马铃薯,2025,39(5):377-385,9.基金项目
国家现代农业产业技术体系专项(CARS-09) （CARS-09）
黑龙江省自然科学基金联合引导项目(LH2024C003) （LH2024C003）
北大荒智慧农场关键技术集成攻关(BDHXX-JS-2025040). （BDHXX-JS-2025040）
