CAJ | 학술논문

为了探讨分蘖期水分胁迫对水稻产量的影响机理，试验以寒地早熟水稻品种垦稻12为材料，通过盆栽方式人为控制土壤水分，研究了分蘖期水分胁迫对水稻农艺性状及产量的影响。结果表明：分蘖期控水，单株有效穗数、穗长、穗粒数、结实率、千粒重和单株产量均低于CK水平；水稻农艺性状与产量的相关性分析表明：正常灌水与水分胁迫两种环境条件下单株有效穗数、穗长和结实率与产量均呈极显著或显著正相关（r＝0．7456**，r＝0．8106**；r＝0．5952*，r＝0．7453**；r＝0．6898**，r＝0．5851*）；正常灌水条件下影响产量的主要性状是有效穗数和结实率，水分胁迫条件下影响产量的主要性状是有效穗数和穗长。
위료탐토분얼기수분협박대수도산량적영향궤리，시험이한지조숙수도품충은도12위재료，통과분재방식인위공제토양수분，연구료분얼기수분협박대수도농예성상급산량적영향。결과표명：분얼기공수，단주유효수수、수장、수립수、결실솔、천립중화단주산량균저우CK수평；수도농예성상여산량적상관성분석표명：정상관수여수분협박량충배경조건하단주유효수수、수장화결실솔여산량균정겁현저혹현저정상관（r＝0．7456**，r＝0．8106**；r＝0．5952*，r＝0．7453**；r＝0．6898**，r＝0．5851*）；정상관수조건하영향산량적주요성상시유효수수화결실솔，수분협박조건하영향산량적주요성상시유효수수화수장。
In order to investigate the mechanism of water stress at tillering stage on rice yield ,taking cold region rice variety cultivated rice Kendao 12 as material ,through a pot of soil moisture artificially controlled manner , the effect of water stress at tillering stage on rice agronomic traits and yield was studied .The results showed that controlled water stress at tillering stage ,panicle per plant ,panicle length ,spikelet per panicle ,seed setting rate ,1 000‐seed weight and yield per plant were lower than CK ;By correlation analysis on agronomic traits and yield of rice ,normal irrigation and water stress conditions in both of environments panicle per plant and panicle length and seed setting rate and yield were highly significant or significant positive correlation (r=0 .745 6* * , r=0 .810 6* * ;r=0 .595 2* ,r=0 .745 3* * ;r=0 .689 8* * ,r= 0 .585 1* );Under normal irrigation condi‐tions the main agronomic traits affected yield was the number of effective panicles and seed setting rate ,under the conditions of water stress ,the main agronomic traits affected yield was the number of effective panicles and panicle leng th .