CAJ | 학술논문

以2001-2013年北方水稻区域试验宁夏永宁点和辽宁开原点的中、早熟组参试品种为材料，进行7个稻米主要品质性状的分析评价。结果表明，开原点的整精米率和胶稠度极显著高于永宁点，永宁点的垩白粒率和垩白度极显著低于开原点，糙米率、精米率和直链淀粉含量两个点间差异不显著；7个主要稻米品质性状中，垩白度和垩白粒率的变异系数较大，其次是整精米率、直链淀粉含量、胶稠度，糙米率和精米率变异系数较小。对永宁和开原两个点水稻灌浆结实期（8-9月份）的气象因子进行比较，发现两地的平均气温、最高气温、最低气温、日照时数基本相似，降水量和相对湿度永宁点明显低于开原点。分别对两地灌浆结实期气象因子与稻米品质性状进行相关分析，结果表明，稻米品质性状与水稻灌浆后期（9月份）气象因子的关系比与灌浆前中期（8月份）更为密切；在糙米率和整精米率与相对湿度的相关性、整精米率与最高气温的相关性、糙米率与降水量的相关性等方面，在永宁点与开原点呈现相反的结果，这可能是两地相对湿度和降雨量不同所致，反映了不同气候生态背景下多种气候因子耦合作用于稻米品质形成的复杂性。
이2001-2013년북방수도구역시험저하영저점화료녕개원점적중、조숙조삼시품충위재료，진행7개도미주요품질성상적분석평개。결과표명，개원점적정정미솔화효주도겁현저고우영저점，영저점적성백립솔화성백도겁현저저우개원점，조미솔、정미솔화직련정분함량량개점간차이불현저；7개주요도미품질성상중，성백도화성백립솔적변이계수교대，기차시정정미솔、직련정분함량、효주도，조미솔화정미솔변이계수교소。대영저화개원량개점수도관장결실기（8-9월빈）적기상인자진행비교，발현량지적평균기온、최고기온、최저기온、일조시수기본상사，강수량화상대습도영저점명현저우개원점。분별대량지관장결실기기상인자여도미품질성상진행상관분석，결과표명，도미품질성상여수도관장후기（9월빈）기상인자적관계비여관장전중기（8월빈）경위밀절；재조미솔화정정미솔여상대습도적상관성、정정미솔여최고기온적상관성、조미솔여강수량적상관성등방면，재영저점여개원점정현상반적결과，저가능시량지상대습도화강우량불동소치，반영료불동기후생태배경하다충기후인자우합작용우도미품질형성적복잡성。
Taking the rice varieties in northern rice regional test as experimental materials, seven quality traits of medium and early maturity rice variety groups in Yongning site (Ningxia) and Kaiyuan site (Liaoning) from 2001 to 2013 were analyzed. The results showed that the head rice rate and gel consistency in Kaiyuan site are significantly higher than Yongning site, the chalky rice rate and chalkiness degree in Yongning site are significantly lower than Kaiyuan site. There are no significant difference between two sites re-garding brown rice rate, milled rice rate and amylose content. Within seven quality traits, the coefficient of variation for the chalky rice rate and chalkiness degree are relatively larger, the coefficient of variation for the head rice rate, amylose content and gel consis-tency are the medium, the coefficient of variation for the brown rice rate and milled rice rate are relatively smaller. Comparison of the meteorological factor between Yongning site and Kaiyuan site during the heading and filling stage from August to September were conducted, which shows that the mean temperature, max temperature, min temperature and hours of sunshine are similar in two sites. The dekad precipitation and relative humidity in Yongning site are significantly lower than Kaiyuan site. The results of the correlation analysis for rice quality traits and meteorological factors shows that the rice quality traits is more closely related to the meteorological factor in September than in August. The results of the correlation between brown rice rate and relative humidity, head rice rate and relative humidity, head rice rate and the maximum temperature, brown rice rate and precipitation are opposite in Yongning site and Kaiyuan site, which may be caused by the different relative humidity and precipitation in two sites. Therefore, the complexity of the rice quality is the results of coupling effects under different climate ecological background.