一个故乡的雨日就如昨夜的一场梦一般。
雨日和雨量较多能增加有效株数，提高纤维支数。
More precipitation amount and rain days helped to increase effective stalks and fiber fineness.
随着降水等级的上升， 雨日与降水量的相关系数迅速增大， 小雨日与降水量的相关性最差， 暴雨日与降水量的相关性最好；
With the rising level of precipitation the correlation coefficient increases rapidly, light rainy days and rainfall relate the worst, storm rainy days and rainfall relate the best.
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