稻草还田作晚稻肥源,其改土作用与增产效果如何?我所1977-1979年对此进行了一些研究,现将结果报告如下。 试验经过与处理 试验田土壤为白夹泥,质地粘重,含有机质和有效养份均较低,耕性不良,湿韧干板。1977年插晚稻前每亩用1/2早稻草还田,与不还田进行比较,结果表明,稻草还田对 Rice straw for the late rice source, the role of soil improvement and yield effect? ​​I 1977-1979 conducted some research on this, the results are reported as follows. After the test and treatment of the experimental soil as white clay folder, the texture sticky weight, organic matter content and effective nutrients are low, poor tillage, wet tough board. In 1977 before the late rice inserted late rice per mu with 1/2 straw, compared with no return, the results show that the straw to the field