Cultivation method for improving main root yield of rheum palmatum

The invention discloses a cultivation method for improving the main root yield of rheum palmatum, and relates to the field of rheum palmatum cultivation. In the method, when rheum palmatum is transplanted, the head and stem of a seedling face downwards and the tail of the seedling faces upwards for tilted planting, and part of the root is left for exposure when soil is covered. The method can promote main root growth, and maximizes the accumulation of photosynthetic products in the main root; and at the same time can control over-development of side roots, and reduces the nutrient consumptionof the side roots. The method has the characteristics of simple process, strong operability, and easy operation in the implementation process, is extremely easy to develop industrially, and can significantly increase the output value per Mu of rheum palmatum. 本发明公开了一种提高掌叶大黄主根产量的栽培方法，涉及掌叶大黄的栽培领域。本发明是在大黄移栽时，将种苗头茎朝下尾部朝上倾斜栽植，并在覆土时余留部分根部暴露。本发明能够促进主根生长，使光合产物最大化地积累在主根；同时能够控制侧根的过度发育，减少侧根的营养消耗；本发明具有过程简单，可操作性强，以及实施过程中易操作的特点，并且极易产业化