Density-increasing nitrogen-reducing efficient planting method for intercropping silage corn and leguminous green manure

The invention belongs to the technical field of silage corn intercropping planting, and discloses a density-increasing nitrogen-reducing efficient planting method for silage corn intercropping leguminous green manure, and the real-time process of the method is as follows: soil cultivation and ditching, variety selection, sowing, fertilization, field management in a corn-green manure symbiotic period, chemical control in a silage corn elongation period, and control in the corn-green manure symbiotic period. The planting density is determined according to the plant type, the growth period and the like of the variety, planting is more scientifically managed and controlled, and the planting is maximized; the method is determined according to perennial weed types of the field. By adopting the leguminous corn intercropping cultivation technology, the traditional mode of planting corn and leguminous plants by farmers is changed, the land multiple cropping index is improved, the unit area comprehensive yield of corn