留高茬麦草直接还田就是稻麦两熟田割麦时留高茬,直接用手扶拖拉机耕翻下去作水稻基肥。棉麦套种田割麦时留高茬,直接用大锹顺行翻下去作棉花追肥。这是维持土壤肥力平衡,增加土壤有机质积累的一项行之有效的措施。大麦杆含氮0.64%、含磷(P_2O_5)0.29%,含钾(K_2O)1.07%,还有纤 Stay high stubble direct return of wheat is the wheat and wheat fields when cutting wheat double crop remain high stubble, direct use of tractor tillage for rice base fertilizer. Cotton and wheat sets of wheat to stay high stubble farming, straight down with a large spade down for cotton top dressing. This is an effective measure to maintain the balance of soil fertility and increase the accumulation of soil organic matter. Barley bar contains 0.64% nitrogen, 0.29% phosphorus (P2O5), 1.07% potassium (K2O)