说明：  基于MATLAB的Bp神经网络花粉分类识别功能,取得花粉的样本后使用BP神经网络进行训练并自动分类，计算出识别的正确率，样本四个特征，以为输出，识别率很高
(Bp neural network classification and recognition functions based on MATLAB, obtain a sample using BP neural network training and automatic classification, calculated to identify the correct rate, sample four characteristics that output a high recognition rate)