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1 黑龙江省大豆种植区土壤现状黑土是种植大豆的优良土壤,由于有机质的大量积累,在我国是自然肥力较高的种植大豆土壤之一。黑龙江省和吉林省黑土总面积约590万hm2,占东北黑土总面积的99.8% 。虽然黑土土质肥沃,但由于近年水土流失及耕作管理措施不当,使得黑土有机质含量退化严重,
1 SOIL STATUS OF SOYBEAN CULTIVATION AREA IN HEILONGJIANG PROVINCE Black soil is an excellent soil for growing soybean. Due to the accumulation of organic matter, soils in China are one of the most fertile soils for soybean cultivation in China. The total area of black soil in Heilongjiang Province and Jilin Province is about 5.9 million hm2, accounting for 99.8% of the total area of black soil in Northeast China. Although black soil is fertile soil, due to improper measures of soil erosion and tillage management in recent years, the organic matter content of black soil degenerates seriously,