Machine-harvested cotton topping-free cultivation method based on mepiquat chloride and water and fertilizer accurate operation

The invention relates to the technical field of agriculture, in particular to a machine-harvested cotton topping-free cultivation method based on mepiquat chloride and water and fertilizer accurate operation. Based on efficient application of mepiquat chloride and accurate operation of water and fertilizer, the purpose of topping-free in the cultivation process of machine-harvested cotton is achieved, manual operation is not needed, and a special chemical capping agent does not need to be applied. The economic yield is equivalent to that of an existing manual topping cotton field and a chemical capping cotton field, and the cost is saved by 43-45 Yuan/mu. By means of the method, the effects of promoting cotton plant growth, reducing labor and labor intensity, improving topping efficiency,reducing topping cost and increasing yield are achieved, and the method can replace manual topping to achieve whole-process mechanization of cotton production. 本发明涉及农业技术领域，具体涉及一种基于缩节胺和水肥精准运筹的机采棉免打顶栽培方法，基于缩节胺的高效施用和水肥的精准运筹，从而达到