论文部分内容阅读
采用田间试验,研究在不同的氮素和生物腐解剂调控措施下稻草还田对水稻氮素积累及其产量的影响。结果表明,秸秆还田能显著提高水稻穗的氮素积累量。与对照相比,无论是总的氮素积累量,还是籽粒的氮素积累量,均以稻草还田两年+高氮+生物腐解剂的处理为最大值。不同处理水平对水稻产量也有明显影响:稻草还田两年的处理显著高于一年的处理,高氮水平显著高于低氮水平,添加生物腐解剂的处理优于未添加生物腐解剂处理;其中以稻草还田两年+高氮+生物腐解剂处理的水稻产量最高。因此,我们认为稻草还田两年+高氮+生物腐解剂是东北地区的最佳稻草还田方式。
Field experiments were conducted to study the effects of straw incorporation on nitrogen accumulation and yield under different nitrogen and biodegrading agents. The results showed that straw returning to field could significantly increase nitrogen accumulation in rice panicle. Compared with the control, both the total amount of nitrogen accumulation and the accumulation of nitrogen in the grain were the maximum in two years of straw returning + high-nitrogen + biocid agent treatment. Different treatment levels also had a significant effect on the yield of rice: straw two years of treatment was significantly higher than the one year treatment, high nitrogen levels were significantly higher than low nitrogen levels, the addition of biological decomposers than non-added biological decomposers Among them, the yield of rice treated with rice straw for two years + high-nitrogen + biological decomposer was the highest. Therefore, we believe that rice straw two years + high nitrogen + biological decomposer is the best straw in northeast China.