CAJ | 학술논문

在移动式防雨棚下,采用盆栽土培方法,以冬小麦(Triticum aestivum L.)为试验材料进行了调亏灌溉(regulated deficit irrigation,RDI)试验研究,目的在于了解RDI对冬小麦籽粒灌浆特性的影响,并对其进行模拟,为建立冬小麦RDI指标与模式提供理论依据与技术参数.试验采用二因素(水分调亏阶段和调节亏水度)随机区组设计.结果表明,RDI条件下冬小麦籽粒灌浆过程符合"缓-快-慢"的"S"型生长曲线,并可用Richards方程进行较好的模拟;不同水分调亏处理间最大灌浆速率及其出现时间、平均灌浆速率、灌浆持续期、活跃生长期和3个灌浆阶段灌浆持续期,以及最终千粒质量等特征参数差异达显著水平;其中,越冬期轻度调亏具有最高的平均灌浆速率(每百粒0.234 g/d)、最大灌浆速率(每百粒0.369 g/d)、最高的第3阶段灌浆速率(每百粒0.099/d)和最高的千粒质量(58.46 g).经相关和逐步回归分析灌浆参数与千粒质量的关系,结果表明,多数参数间存在着显著或极显著的相关性,其中,与千粒质量有显著或极显著相关关系的参数有最大灌浆速率、平均灌浆速率、活跃生长期和第3阶段灌浆速率等.
재이동식방우붕하,채용분재토배방법,이동소맥(Triticum aestivum L.)위시험재료진행료조우관개(regulated deficit irrigation,RDI)시험연구,목적재우료해RDI대동소맥자립관장특성적영향,병대기진행모의,위건입동소맥RDI지표여모식제공이론의거여기술삼수.시험채용이인소(수분조우계단화조절우수도)수궤구조설계.결과표명,RDI조건하동소맥자립관장과정부합"완-쾌-만"적"S"형생장곡선,병가용Richards방정진행교호적모의;불동수분조우처리간최대관장속솔급기출현시간、평균관장속솔、관장지속기、활약생장기화3개관장계단관장지속기,이급최종천립질량등특정삼수차이체현저수평;기중,월동기경도조우구유최고적평균관장속솔(매백립0.234 g/d)、최대관장속솔(매백립0.369 g/d)、최고적제3계단관장속솔(매백립0.099/d)화최고적천립질량(58.46 g).경상관화축보회귀분석관장삼수여천립질량적관계,결과표명,다수삼수간존재착현저혹겁현저적상관성,기중,여천립질량유현저혹겁현저상관관계적삼수유최대관장속솔、평균관장속솔、활약생장기화제3계단관장속솔등.
Under the conditions of mobile rain-proof shelter and winter wheat cultivated in plots, effect of regulated deficit irrigation (RDI) on grain filling characteristics of winter wheat was investigated. A two-factor (growing stages introducing RDI and degrees of water deficit) randomized block designed experiment was employed in pot culture. The results showed that the grain filling course of winter wheat under RDI accorded with "S" growth curve of "slow-fast-slow", which could be simulated well by Richards equation. There were significant differences among some of filling characteristic parameters under different water deficit treatments such as maximum filling rate and its appearing time, average filling rate, filling duration, active growing duration, and filling duration time of each filling phase as well as 1000-grain weight (GW). Light water deficit in wintering period had the highest average filling rate (0.234 g/d per 100 grains), biggest filling rate (0.369 g/d per 100 grains), filling rate of the third phase (0.099 g/d per 100 grains), and 1000-GW (58.46 g). Results from correlation and stepwise regression analysis methods indicated that there were significant or very significant correlations among most parameters, in which biggest filling rate, average filling rate, active growing duration and filling rate of the third phase were significantly correlated to GW.