Rice and soybean intercropping plantation method

The invention relates to a rice and soybean intercropping plantation method, which is characterized in that in the same rice field, except in winter and early spring, double-cropping early rice and late rice are intercropped with spring soybean and autumn soybean, or single-cropping rice is intercropped with spring soybean and autumn soybean; in winter or early spring, ridges are formed in parallel with planting rows of rice as soybean planting rows; the ratio of the width of the rice planting row to the width of the soybean planting row is 2:1 or 3:1; the spring soybean is sown or transplanted in early April, and reaped in early to mid-July; the autumn soybean is non-tillage sown in mid-July, and ripens from the end of October to early November; when the double-cropping early rice and late rice are intercropped with the spring soybean and the autumn soybean, seedlings of the early rice are transplanted from the end of April to early May, and the early rice is reaped in late July; seedlings of the late rice a