CAJ | 학술논문

稻谷容重能反映稻谷籽粒的大小、形状、整齐度、胚乳质地等品质性状，与含水量等指标也密切相关。采用6个正常成熟收获的籼稻品种，研究不同干燥方式下，稻谷容重与含水量的关系。结果表明：（1）相同干燥方式下，稻谷容重因品种不同而不同，含水量为14.5％时，供试品种 LP5容重最大，为552.8 g／L，LP7容重最小，为534.2 g／L。（2）相同品种的稻谷容重因干燥方法不同而不同，采用自然晾晒方式，当含水量在23％～17.5％时，容重缓慢降低；含水量在17.5％～10.5％时，容重升高较快；此后容重随着含水量降低极缓慢升高。采用45～50℃烘箱间歇式烘干降水时，当含水量在23％～14.5％时，容重随含水量的下降而降低；当含水量继续下降至9％时，容重值基本趋于平稳；此后，容重随含水量降低略有增加。（3）在稻谷安全贮藏水分范围（含水量＜14.5％），相同品种，自然晾晒降水的容重比烘干干燥的容重略高。（4）当稻谷含水量＞10.5％时，稻谷容重与含水率呈直线相关。初始容重值相近的品种，可共用回归方程，而初始容重相差较大的品种，回归方程不同。
도곡용중능반영도곡자립적대소、형상、정제도、배유질지등품질성상，여함수량등지표야밀절상관。채용6개정상성숙수획적선도품충，연구불동간조방식하，도곡용중여함수량적관계。결과표명：（1）상동간조방식하，도곡용중인품충불동이불동，함수량위14.5％시，공시품충 LP5용중최대，위552.8 g／L，LP7용중최소，위534.2 g／L。（2）상동품충적도곡용중인간조방법불동이불동，채용자연량쇄방식，당함수량재23％～17.5％시，용중완만강저；함수량재17.5％～10.5％시，용중승고교쾌；차후용중수착함수량강저겁완만승고。채용45～50℃홍상간헐식홍간강수시，당함수량재23％～14.5％시，용중수함수량적하강이강저；당함수량계속하강지9％시，용중치기본추우평은；차후，용중수함수량강저략유증가。（3）재도곡안전저장수분범위（함수량＜14.5％），상동품충，자연량쇄강수적용중비홍간간조적용중략고。（4）당도곡함수량＞10.5％시，도곡용중여함수솔정직선상관。초시용중치상근적품충，가공용회귀방정，이초시용중상차교대적품충，회귀방정불동。
To assess the relationship between rice grain test weight and moisture content under different drying methods, six indica hybrid rice varieties were analyzed for test weight and moisture content. The results showed that rice grain test weight was closely related to moisture content in grain. Rice grain test weight varied with varieties. The highest was the va-riety of LP5 with the rice grain test weight 552.8 g/L and the lowest was the variety of LP7 with the rice grain test weight 534.2 g/L when the rice grain with moisture content of 1 4.5%within the same drying method. The rice grain test weight of the same variety was different because of different drying method. The rice grain test weight fell slowly when the rice grain with moisture content from 23% to 1 7.5% and increased quickly when the rice grain with moisture content from 1 7.5% to 1 0.5%and then rose slowly very much with moisture content reduced by natural air drying. The rice grain test weight fell down with moisture content fell down when it dropped from 23%to 1 4.5%by intermittent oven drying with the temperature of 45 ~50℃. The rice grain test weight trended to steady when the moisture content went below 9%and then increased slowly with moisture content continue to fall. The rice grain was higher by using the method of natural drying than intermittent oven drying when the moisture content was ranged of safety storage moisture (moisture content <1 4.5%)of the rice variety. There were linear correlation between rice grain test weight and moisture content when the moisture content was above 1 0.5%. The regression equation can be shared when the varieties with close initial test weight but the regression equation was different when the varieties with significant different initial test weight.