用MINQUE法估算各项方差分量，然后对品种效应的线性对比作显著性测验。
Variance components estimated by MINQUE method can be used in significance test for linear contrasts of variety effects.
削减扭曲：对比色调，光有丰富的线性临时关闭截然不同的荧光色调。
TRIM TWIST: Contrast tonal, optical prints with plentiful linear snap closures in distinct fluorescent tones.
经过与线性回归的对比和1998年的预报，在历史拟合率和预报效果上的提高较为明显。
The improvement of fitting and results is obvious through the comparative analysis of 1iilear regression and forecasting in 1998.
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