Large-scale moisture regulation and control method for promoting growth of amomum tsao-ko

The invention discloses a large-scale moisture regulation and control method for promoting growth of amomum tsao-ko. The moisture regulation and control method comprises the steps of ditching, water diversion and moisture regulation and control, and specifically comprises the steps that ridging and ditching are carried out on an amomum tsao-ko planting field, the gradient of an irrigation ditch is controlled to be 5-10 degrees, and the S-shaped irrigation ditch surrounds amomum tsao-ko planting lines; water is guided into the irrigation ditch from a water source and is made to slowly flow along the S-shaped irrigation ditch; water supply amount of the irrigation ditch is regulated according to rainfalls and air temperatures during amomum tsao-ko planting seasons, and the average water content of soil of the amomum tsao-ko planting lines is controlled to be 30%-40% in the dry season; meanwhile, woods around the amomum tsao-ko planting field are subjected to pruning and intermediate cuttings, so that the canopy density of the woods is controlled to be 40%-70%. By means of the moisture regulation and control method, the specification of the irrigation ditch around the amomum tsao-ko planting field is optimized, planting spaces of amomum tsao-ko and the overshadow capacity of surrounding woods are also regulated and controlled, co-ordination of supply and demand of water is achieved, growth of amomum tsao-ko is promoted, waste of the water resource is reduced, the technique is simple, operation is convenient, large-scale management and protection are convenient, and economic benefits are remarkable.