CAJ | 학술논문

为给寒地水稻高产栽培提供依据,采用不同的氮肥处理,研究了氮肥对水稻产量和干物质的影响,以及齐穗后干物质重与产量之间的相互关系。结果表明：氮肥对水稻产量和水稻不同时期的叶片、茎鞘及总干物质重都有明显的增加作用,但过度增加氮肥,不仅干物质重增加不明显,而且也达不到高产水平。水稻齐穗期的干物质重与产量呈二次曲线关系,最佳值为9 228±300kg.hm-2;水稻齐穗至成熟期干物质积累量与产量呈正相关关系,y=1.1099x＋1 960.6（R2=0.9899）。
위급한지수도고산재배제공의거,채용불동적담비처리,연구료담비대수도산량화간물질적영향,이급제수후간물질중여산량지간적상호관계。결과표명：담비대수도산량화수도불동시기적협편、경초급총간물질중도유명현적증가작용,단과도증가담비,불부간물질중증가불명현,이차야체불도고산수평。수도제수기적간물질중여산량정이차곡선관계,최가치위9 228±300kg.hm-2;수도제수지성숙기간물질적루량여산량정정상관관계,y=1.1099x＋1 960.6（R2=0.9899）。
In order to provide the theory basis for rice high yield cultivation in cold region,the effects of nitrogen fertilizer on rice yield and dry matter,and the relationship between dry matter after full heading stage and yield were studied.The results showed that nitrogen fertilizer could significantly increase rice yield and dry matter weight of leaf,stem,sheath and entire plant in different periods.But under conditions of the excessive nitrogen fertilizer,not only dry matter was not increased significantly,but also yield did not reach high level.Dry matter weight at full heading stage and yield had a conic relationship,and the best value was 9 228±300 kg·hm-2.Dry matter accumulation after full heading stage had a positive relationship with the yield.The eqation was,y=1.1099x＋1 960.6（R2=0.9899）.