CAJ | 학술논문

以本地表现最好的三系杂交稻Ⅱ优58和两系杂交稻两优培九为材料，比较研究了两组合后期叶片叶绿素含量与功能随时间发生的变化、剑叶在后期不同阶段光合速率的变化及后期干物质的转运与分配。结果表明：两系杂交稻后期虽具有叶绿素功能期较长和光合速率较稳定等优势，但在中肥条件下，仍表现库大源小，干物质转运欠畅，源库流关系欠协调，因而结实率较低，谷粒充实度较低，限制了其增产潜力的发挥。两系杂交稻的超高产栽培，必须以高产土壤为基础。
이본지표현최호적삼계잡교도Ⅱ우58화량계잡교도량우배구위재료，비교연구료량조합후기협편협록소함량여공능수시간발생적변화、검협재후기불동계단광합속솔적변화급후기간물질적전운여분배。결과표명：량계잡교도후기수구유협록소공능기교장화광합속솔교은정등우세，단재중비조건하，잉표현고대원소，간물질전운흠창，원고류관계흠협조，인이결실솔교저，곡립충실도교저，한제료기증산잠력적발휘。량계잡교도적초고산재배，필수이고산토양위기출。
The difference of photosynthetic characteristics between two-line hybrid rice Liangyou Peijiu and three-line hybrid rice Ⅱ You 58 was compared after heading stage. The results showed that compared with Ⅱ You 58, Liangyou Peijiu had a longer functional period of photosynthesis and the photosynthetic rate decreased more slowly in flag leaf. Even so, under middle fertility conditions, its source-sink relation could not be well coordinated for its relatively smaller source but larger sink, and its dry matter could not be transferred to spikelets normally, which results in a lower seed setting rate and a poorer grain filling in Liangyou Peijiu than in Ⅱ You 58, thus limiting the high-yielding potential of Liangyou Peijiu. To achieve a super high yield of two-line hybrid rice Liangyou Peijiu, fertile soil is a must in its cultivation.