蔬菜简易无土育苗技术一、无土育苗的基质（一）炭化稻壳＋沙这种基质是将炭化稻壳７份，沙３份混合而成。炭化稻壳优点是稻壳经燃烧带菌少，减轻育苗病害，含营养元素较丰富，价格低廉，搬运方便，通透性好。ＰＨ值和化学性质稳定；缺点是小孔隙度较小．持水性差。制备炭... Vegetable simple soilless seedling technology First, soilless seedling matrix (A) carbonized rice husk + sand This matrix is ​​made of carbonized rice husk 7, 3 parts of sand mixed together. The advantage of carbonized rice hulls is that the rice hulls are less affected by the combustion, reduce seedling disease, contain rich nutrient elements, low price, convenient handling and good permeability. PH value and chemical stability; disadvantage is small porosity. Poor water retention. Preparation of carbon ...