Abstract: Seeder of soybean variable fertilizer was designed， whose structure was light and sturdy， could reduce the power output of the tractor. Moreover， the fuel and the investment of agriculture could be saved. The seeder was equipped with advanced detection system， to avoid broadcast replay leakage， and with variable transmission of the international advanced continuously equipment at the same time. The amount of fertilization could be adjusted according to the growth needs of the crop， in which condition the crop yields was improved. The practice showed that the seeder performance was reliable， structure design was reasonable， which was consistent with the requirements of agricultural technology.

Key words: variable fertilization, seeder, soybean