CAJ | 학술논문

在田间小区的试验条件下研究不同硒（Se）肥的施用方法及施用时期对水稻植株和籽粒中Se的吸收与富集的影响。研究表明：水稻在生长前期和旺盛时期对Se的吸收和积累有很大差异。与对照相比，苗床施Se、土壤施Se和叶面喷Se 3种方式均能明显提高各生育期水稻植株和籽粒中Se的含量，富Se效果达到差异极显著水平。从稻米富Se效果看，富Se含量在0.163~0.207 mg·kg-1之间，Se含量增加了5.8~7.6倍，且都在安全范围内。从水稻富Se的方式上，不同施Se方式富Se效果依次为水稻扬花期喷Se>土壤施Se>育苗期喷Se>对照。从叶面喷施Se的时间上，稻米富Se效果依次是扬花期喷Se>育苗期喷Se>灌浆期喷Se>齐穗期喷Se>对照。从水稻富Se类型上看，外源无机Se和有机Se都能明显促进水稻对Se的积累。水稻育苗期和扬花期叶面喷Se在提高水稻稻米中含Se量的同时，并没有降低水稻产量。因此水稻叶面喷Se是一条安全、简单、易操作的途径。
재전간소구적시험조건하연구불동서（Se）비적시용방법급시용시기대수도식주화자립중Se적흡수여부집적영향。연구표명：수도재생장전기화왕성시기대Se적흡수화적루유흔대차이。여대조상비，묘상시Se、토양시Se화협면분Se 3충방식균능명현제고각생육기수도식주화자립중Se적함량，부Se효과체도차이겁현저수평。종도미부Se효과간，부Se함량재0.163~0.207 mg·kg-1지간，Se함량증가료5.8~7.6배，차도재안전범위내。종수도부Se적방식상，불동시Se방식부Se효과의차위수도양화기분Se>토양시Se>육묘기분Se>대조。종협면분시Se적시간상，도미부Se효과의차시양화기분Se>육묘기분Se>관장기분Se>제수기분Se>대조。종수도부Se류형상간，외원무궤Se화유궤Se도능명현촉진수도대Se적적루。수도육묘기화양화기협면분Se재제고수도도미중함Se량적동시，병몰유강저수도산량。인차수도협면분Se시일조안전、간단、역조작적도경。
Under field plot experiment condition, the different application methods and application periods of selenium(Se)fertilizer were explored to make sure the absorption and accumulation of Se in plants and grains of rice. The results showed there were significant differ-ences in the early and exuberant periods of rice for Se absorption and accumulation. Compared with the control, three kinds of application methods could significantly improve Se value of rice. From the effect of Se enrichment, the content of Se was in the range of 0.163~0.207 mg· kg-1 which increased by 5.8~7.6 times, within the safe range. From the way of Se enrichment, the order of better effect was:spraying Se at flowering stage treatment>application Se in soil>spraying Se at breeding period>CK. From the foliar application period of Se, the order of Se enrichment effect was spraying Se at flowering stage>breeding period>grain filling period>full heading period>CK. Exogenous inorganic and organic Se fertilizer could significantly promote the accumulation of Se in rice. Foliar spray in rice seedling and flowering stage could increase the Se containing of rice grain but not reduce the yield of rice.