干旱区生态环境知识资源中心

According to the nature condition in northeast semiarid region, the 3 technologies of anti-draught and water reservation were selected and assembled organically. The influences of the technologies assembling on the benefit of soybean planting was studied based on experiment which was conducted in Gan'nan county Heilongjiang province, and the economical benefit of different disposals was evaluated by means of multiple-criteria decision method. Based on the evaluation, a optimum irrigation system which is suitable to the region for soybean growing under the actual condition of 2005 was proposed in the paper.