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近年来,我省东部山区半山区大豆面积增加较快。例如:蛟河市从1985年以来大豆种植面积连续6年超过旱田面积的50％,出现了大量的重茬与迎茬大豆,造成大豆单产下降。针对大豆重迎茬面积增加,产量下降的问题,我们进行了重迎茬大豆地不减产的研究。
In recent years, the mid-mountainous area in the eastern part of our province has experienced a rapid increase in the area of soybean. For example, the area under soybean cultivation in Jiaohe City surpassed 50% of the dry-land area for six years in a row since 1985, with a large number of continuous cropping and pickling of soybean cropping, resulting in a drop in soybean yield. In view of the fact that the area of heavy stubble continued to increase and the yield dropped, we conducted a study on reducing the yield of soya bean by continuous cropping.