摘要
为探索出米率作为稻谷标准定等指标的可行性,以不同地区、不同年份、不同品种的427份籼稻样品和467份粳稻样品为实验对象,研究出米率与稻谷质量指标的相关性.结果表明,出米率一定程度上可以反映稻谷出糙率、垩白度和不完善粒率的水平,作为定等指标是可行且必要的.为确定稻谷出米率的等级划分,对粒形、类型进行出米率的多因素方差分析,结果表明类型对稻谷出米率存在极显著影响,粒形对粳稻出米率存在极显著影响.最终,建议稻谷出米率等级划分为:长粒形粳稻1等≥ 73％、2等≥ 69％、3等≥ 65％,中粒形粳稻1等≥75％、2 等≥ 72％、3 等 ≥69％,短粒形粳稻 1 等≥ 77％、2 等≥ 74％、3 等 ≥71％,籼稻 1 等≥ 69％、2 等 ≥67％、3 等≥65％.
Abstract
In order to explore the feasibility of using milled rice yield as a grading index for paddy standard,this article takes 427 indica rice samples and 467 japonica rice samples from different regions,years,and varieties as experimental subjects to study the correlation between milled rice yield and paddy quality indicators.The results indicate that the milled rice yield can to some extent reflect the levels of husked rice yield,chalkiness degree and unsound kernel,and it is feasible and necessary to use it as a grading index.To determine the grading of milled rice yield,a multivariate analysis of variance was conducted on paddy shape and type.The results showed that type had a significant impact on milled rice yield,while grain shape had a significant im-pact on japonica rice yield.Finally,it is recommended to classify the rice yield level into:long grain japonica rice grade 1≥73％,grade 2≥69％,grade 3≥65％,medium grain japonica rice grade 1≥75％,grade 2 ≥72％,grade 3≥69％;short grain japonica rice grade 1≥77％,grade 2≥74％,grade 3≥71％,indica rice grade 1≥69％,grade 2≥67％,and grade 3≥65％.
维普
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