Experimental aim to determine the appropriate land prepairing measures for soybean VX93 in winter in Thai Nguyen province. The treatments included (I): traditional tillage (control ), (2) Seed scattering - Thinly ploughing, making beds of soil, (3) Seed scattering - none ploughing
(4) Sowing seeds directly on rice plants after harvesting - none ploughing. The results showed that the planting methods of Seed scattering - Thinly ploughing, making beds of soil gave the best growth and development: highest theoretical yield 3.57 tons/ha
highest actually yield 2.14 tons/ha. Obtained experimental data had a sure stability through 3 years of study (2006 , 2007, 2008), treatment 2 gave the most stable results (bi = 1).