Since rice seems elliptic, the long axis of ellipse is used to realize fast calculation of head milled rice.
由于米粒形似椭圆，并以长轴为对称轴来实现米粒长度的快速计算。
The major quality problems are higher chalky rice rate, higher chalkiness score, lower head milled rice yield, and poor eating quality.
目前稻米品质存在的主要问题是垩白米率高、垩白度高、整精米率低和食味差。
The effect of ratio source to sink at fulling head on percentage of head milled rice and chalky rice was investigated via 25 mid-season rice hybrids.
以2 5个杂交中稻组合为材料，研究了品种齐穗期库源结构对稻米整精米率与垩白粒率的影响。
In terms of various quality characters, most of the cultivars tested were, however, not satisfactory in head milled rice recovery, chalkness ratio, chalkness area and grain shape.
分析“八五”参试品种各项品质性状表现，参试品种品质仍不理想，大多数品种整精米率、垩白率、垩白面积、粒型表现欠佳。
Variation coefficients of grain chalkiness, translucency and chalkiness were high, but those of brown rice rate, milled rice rate and head rice rate were low.
糙米率、精米率、粒长和长宽比的变异系数较小，垩白米率、透明度和垩白度的变异系数较大。
The rice quality was significantly improved especially for brown rice rate, milled rice rate, head rice rate, chalky grain rate and chalkiness.
施用硅肥能显著改善稻米品质，主要表现为稻米的糙米率、精米率和整精米率显著提高，稻米的垩白粒率和垩白度显著降低。
Correlation analysis showed that the milled rice rate and head rice rate were significantly and positively correlated with silicon rate for the two varieties.
相关分析表明，两品种的精米率和整精米率与有效硅施用量呈正相关。
The rates of brown, milled and head rice increased while chalky rice rate and chalkiness decreased in interplanting with zero tillage.
翻耕移栽秸秆还田也能提高整精米率，降低垩白率和垩白度。
The rates of brown, milled and head rice increased while chalky rice rate and chalkiness decreased in interplanting with zero tillage.
翻耕移栽秸秆还田也能提高整精米率，降低垩白率和垩白度。
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