Different planter way paddy rice nitrogen absorption use characteristic research abstract:This take the precocious late japonica rice,late is ripe the japonica rice and the ripe japonica rice paddy rice variety (including conventional Japonica rice and hybrid Japonica rice) as the material,selects the different planter method to conduct the research to the paddy rice nitrogen absorption use characteristic.The result indicated that plants the way paddy rice nitrogen absorption use to have respectively the distinct characteristic differently,and variety birth type influence.Plants with the hand with the machine planting compares,the direct seeding jointing nitrogen absorbancy is ahead of time strong,the adult plant azotic rate,attracts the nitrogen quantity and the nitrogen untake rate is high,but the jointing will later attract the nitrogen ability to be weaken gradually,the adult plant azotic rate,will attract the nitrogen quantity and the nitrogen untake rate is obviously small,the nitrogen absorption use factor and hundred kilograms grains will need the nitrogen quantity obviously to be also small; The hand plants with the machine planting the adult plant azotic rate and hundred kilograms grains needs the nitrogen quantity difference not to be generally obvious,but after the hand plants joints the later stage to attract the nitrogen quantity,the mature period always attract the nitrogen quantity,the earing,the nitrogen untake rate and the nitrogen absorption use factor obviously is higher than the machine planting.