Cultivation trough for stably supplying soil water for tap root crops

The invention relates to a cultivation trough for stably supplying soil water for tap root crops. The cultivation trough comprises a trough body with an obconical cutting head, the upper portion of the trough body is wider than the lower portion of the trough body, a plurality of columnar micropore clay pipes similarly parallel to a main root are arranged in the trough body, a turbinate cutting head is defined by the micropore clay pipes on the periphery of the longitudinal central line of the trough body, the micropore clay pipes are all in a hollow column shape, the micropore clay pipes are jointly connected with a water pipe, the water pipe extends out of the trough body and is communicated with an external water supply device, dynamic stable supply of the water needed by the tap root crops is truly achieved, therefore, the drought stress damage of the crops due to the fact that the soil water is in lack and the situation cannot be reflected in time is avoided, water and fertilizer can be efficiently utilized, and waste of the water and nutrients is avoided.