总结皖系白猪前三个世代的选择效果。
Concluding the selection effects on the previous three generations of Wanxi white pig.
在产量改进的选择中，株行世代直接选择的实际效果较差。
Yet in the selection for yield improvement, the practical effect of direct yield selection in plant-to-row generation was not satisfactory.
在产量改进的选择中，株行世代直接选择的实际效果较差。
Yet in the selection for yield improvement, the practical effect of direct yield selection in plant-to-row generation was not satisfactory.
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