悬耕开荒种植水稻张德忠，黄鹏（黑龙江省绥棱农场）农业综合开发已在我国各地全面开展，大面积的荒地被开垦。这些荒地多属于３～４类荒原，植被覆盖较厚，以沼泽化草甸土为主。由于多年积水形成塔头和高位草炭层，有机质含量在２０％以上，不易开垦，对这类荒地如何开发... Rotation of cultivated land for cultivation of rice Zhang Dezhong, Huang Peng (Heilongjiang Province Suileng Farm) Comprehensive agricultural development has been carried out in all parts of China, a large area of ​​wasteland has been reclaimed. These wasteland mostly belong to 3 ~ 4 types of wilderness, vegetation cover thick, dominated by swamp meadow soil. As many years of stagnant water to form the tower head and high peat layer, organic matter content of more than 20%, not easy to reclaim, how to develop such wasteland ...