CAJ | 학술논문

为探明机械化播栽方式对杂交中稻干物质生产的影响，2012～2013年采用两因素裂区试验设计，研究了播栽方式及其与穴苗数和播期互作对杂交中稻 F优498干物质积累与分配、干物质输出与转化的影响。结果表明：播栽方式及其与穴苗数和播期的互作对杂交中稻干物质积累、分配和转运具有明显影响。机直播和机插处理的群体总干物质积累量低于手插处理，但机直播在拔节—抽穗阶段的干物质积累量和积累速率显著高于机插和常规手插，同时保持较高的茎鞘输出量、茎鞘输出率和茎鞘转化率，而机插在抽穗—成熟阶段具有较高的干物质积累量和积累速率。低苗和早播处理有利于提高抽穗后物质同化量、抽穗后干物质所占比例以及抽穗后干物质贡献率。适当早播能够有效提高杂交中稻机直播和机插的收获指标。
위탐명궤계화파재방식대잡교중도간물질생산적영향，2012～2013년채용량인소렬구시험설계，연구료파재방식급기여혈묘수화파기호작대잡교중도 F우498간물질적루여분배、간물질수출여전화적영향。결과표명：파재방식급기여혈묘수화파기적호작대잡교중도간물질적루、분배화전운구유명현영향。궤직파화궤삽처리적군체총간물질적루량저우수삽처리，단궤직파재발절—추수계단적간물질적루량화적루속솔현저고우궤삽화상규수삽，동시보지교고적경초수출량、경초수출솔화경초전화솔，이궤삽재추수—성숙계단구유교고적간물질적루량화적루속솔。저묘화조파처리유리우제고추수후물질동화량、추수후간물질소점비례이급추수후간물질공헌솔。괄당조파능구유효제고잡교중도궤직파화궤삽적수획지표。
To clarify the effects of mechanical sowing and transplanting on dry mat-ter production of middle-season hybrid rice, a two-factor split plot design was used to study the effects of different sowing and transplanting methods and their interac-tion with the seedling number per hil or seeding time on dry matter accumulation, distribution and transformation of F You 498, a middle-season hybrid rice variety, under field conditions in 2012 and 2013. The results showed that there was a marked effect of the sowing and transplanting methods and their interaction with the seedling number per hil or seeding time on dry matter accumulation, distribution and transformation. The total population dry matter accumulation of the treatments with mechanical direct seeding (MDS) and machine-based transplanting (MT) was lower than that of the treatment with traditional manual transplanting (TMT). How-ever, MDS had higher dry matter accumulation and accumulating rate in the joint-ing-earing stage,and maintained higher stem-sheath exportation, export rate and transformation than MT and TMT; MT had higher dry matter accumulation and ac-cumulating rate in the heading-maturity period than MDS and TMT. Moreover, the treatments with low seedling number per hil or early seeding enhanced the assimi-lation of dry matter after heading,the ratio of dry matter accumulation after earing to biomass yield and the contribution rate of dry matter accumulation after earing, and a reasonable early sowing was favorable to increase the harvest index of middle-season hybrid rice under mechanical sowing and transplanting conditions.