The fertility restoration of the female pollen, result from low temperature during the period of fertility conversion would affect seed purity.
育性敏感期的低温会导致母本花粉的育性恢复，从而影响制种纯度；
Through the pollen of vegetation restoration and climate with high resolution, combined with other substitution indexes, can achieve a high contrast the accuracy.
通过孢粉恢复的植被和气候具有高分辨率，结合其它的代用指标的对比，可以达到一个很高的准确率。
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