我省滨海、内陆盐碱土约占总耕地面积的10％左右,历年来均有不同程度的缺苗断条。盐碱土里含有可溶性有害盐类,能毒害和腐蚀幼苗。盐碱土土壤溶液渗透压大,种子不能吸水,影响种子出苗。这是盐碱土旱田缺苗的主要原因。一般土壤全盐达到0.3～0.4％就不利于保苗。 Coastal province, inland saline-alkali soil accounts for about 10% of the total area of ​​cultivated land, over the years have varying degrees of lack of seedling broken bar. Salt and alkali soil contains soluble harmful salts, can poison and corrode seedlings. Saline soil soil solution osmotic pressure, the seeds can not absorb water, affecting seed emergence. This is the main reason for lack of seedlings in saline-alkali soil. Salt in general soil reached 0.3 to 0.4% is not conducive to seedlings.