Several meters of drainage ditches can be dug for basic farmland.

The width is not more than three meters. The standard for digging ditches in basic farmland is that the width of digging ditches should not exceed three meters and the depth should not exceed thirty meters. According to the demand of farmland, because of agricultural production and life, especially dry land crops, when there is heavy rain in a year, it is sometimes necessary to clear ditches and drain water to reduce soil moisture and benefit crop growth.