五十年代末,烧野窑、拆家炕的积肥方法在我县愈搞愈烈,这种积肥方法使大量的有机物被烧毁,又有大批农田因挖坷垃破坏耕作层,导致土壤有机质贫乏,保肥供肥能力差,耕作层严重板结,作物生长发育不良,麦稻坐苗面积逐年增加。六十年代开始利用作物秸秆沤肥或高温堆肥。七十年代又提出了秸秆直接还田这项措施。在推广过程中,对堆、沤和秸秆还田这三种积肥方法进行了比较,发现堆、沤肥的弊病一是发酵原 The late fifties, burned kilns, demolition kang kang fertilizer method in my county fiercer, this method of fertilizer so that a large number of organic matter was burned, and a large number of farmland due to digging rubbish destruction tillage, resulting in the lack of soil organic matter, Poor fertilizer and fertilizer supply capacity, tillage layer serious compaction, poor crop growth and development, wheat seedling area increased year by year. The sixties began to use crop straw fertilizer or high-temperature compost. Seventies and put forward the direct straw back to this measure. In the promotion process, heap, 沤 and straw returning to the three kinds of fertilizer methods were compared and found that heap, 沤 fat one of the disadvantages of fermentation of raw