One: Understanding the influence of various soils on seed germination time can help farmers calculate the time of sowing and topdressing.

Two: Different soil qualities have different advantages and disadvantages for soil. For example, a single fertile soil is suitable for nutrition and growth, but it is not conducive to the ventilation of early seedling roots. Sandy soil is suitable for water control, not too much water, but it lacks nutrition. According to the needs of planting plants and crops, it is most beneficial to customize the soil ratio in different periods.