seed counting

例句：

1. 1. To determine the number of seeds in a particular area, we need to perform seed counting.
   为了确定某个特定区域的种子数量，我们需要进行种子计数。
2. 2.The researcher used seed counting to study the growth patterns of different species.
   研究人员使用种子计数来研究不同物种的生长模式。
3. 3.During the harvest season, farmers often use seed counting to estimate the yield of their crops.
   在收获季节，农民经常使用种子计数来估计他们的作物产量。