CAJ | 학술논문

以‘费乌瑞它’和‘克新1号’为试验材料，通过在马铃薯苗期设置重度水分亏缺（最大田间持水量的35%）、轻度水分亏缺（最大田间持水量的50%）和充分灌溉（最大田间持水量的65%）3个水分处理，其他时期均充分灌溉，研究了马铃薯苗期不同水分亏缺对产量形成的影响。结果表明，2品种生育前期的叶面积指数、干物质积累量随苗期水分亏缺程度的增加而逐渐降低，而复水后，从出苗后22 d至收获的叶面积指数与干物质积累一直表现为：轻度水分亏缺>充分灌溉>重度水分亏缺，意味着一定程度的水分亏缺后，马铃薯存在明显的复水补偿效应。收获时2品种的块茎产量依次为：轻度水分亏缺>充分灌溉>重度水分亏缺，其中，轻度水分亏缺处理的商品率均高于其他2个处理，而单株结薯数表现为：充分灌溉>轻度水分亏缺>重度水分亏缺，说明适度的水分亏缺通过控制结薯数与增加块茎重量产生增产效应。
이‘비오서타’화‘극신1호’위시험재료，통과재마령서묘기설치중도수분우결（최대전간지수량적35%）、경도수분우결（최대전간지수량적50%）화충분관개（최대전간지수량적65%）3개수분처리，기타시기균충분관개，연구료마령서묘기불동수분우결대산량형성적영향。결과표명，2품충생육전기적협면적지수、간물질적루량수묘기수분우결정도적증가이축점강저，이복수후，종출묘후22 d지수획적협면적지수여간물질적루일직표현위：경도수분우결>충분관개>중도수분우결，의미착일정정도적수분우결후，마령서존재명현적복수보상효응。수획시2품충적괴경산량의차위：경도수분우결>충분관개>중도수분우결，기중，경도수분우결처리적상품솔균고우기타2개처리，이단주결서수표현위：충분관개>경도수분우결>중도수분우결，설명괄도적수분우결통과공제결서수여증가괴경중양산생증산효응。
By using cvs 'Favorita' and 'Kexin 1' as materials, the effects of water deficit at seedling stage on potato yield formation was investigated. Three different water treatments were set up at the seedling stage, which were severe water deficit (35%of the maximum field capacity), moderate water deficit (50%of the maximum field capacity) and ful irrigation (65%of the maximum field capacity), but at other growth period of potatoes, ful irrigation was maintained for al the treatments. The results showed that the leaf area index and dry matter accumulation during early developmental stage of potatoes were decreased significantly with seedling water deficit. However, after rehydration, the leaf area index and dry matter accumulation exhibited the fol owing trend:moderate water deficit (50%)>ful irrigation (65%)>severe water deficit (35%), which maintained from the twenty two days after emergence to harvest. It means that potato has the compensating effect at the later developmental stage while experienced water deficit at the seedling stage and rehydrated later on. The tuber yield for the two cultivars at harvest was in order as:moderate water deficit>ful irrigation>severe water deficit. The marketable tuber percentage under seedling moderate water deficit was significantly higher than other two treatments. However, the tuber number per plant manifested as:ful irrigation>moderate water deficit>severe water deficit. It demonstrates that the effect of yield promotion under seedling moderate water deficit was attributed to the increase in tuber weight instead of tuber number.