天然矿物改良剂在微咸水灌溉土壤中应用效果的研究

利用10种不同天然矿物作为土壤改良剂，对矿化度4～5g／L的微咸水灌溉农田土壤进行改良效果试验。结果表明：改良剂1能够降低土壤容重12.23％，提高土壤孔隙度12.28％。参试的改良剂均能够降低0～5cm土壤全盐量，最大降幅为72.5％，并能降低0～40cm土壤中CO3^2-和HCO3^-离子，最大降幅达100％，改良剂4能够增加土壤中的Ca^2＋、Mg^2＋离子、降低土壤中的K^＋＋Na^＋离子。天然矿物土壤改良剂能够有效地改善土壤物理和化学环境。

Study of Effect on Using Natural Minerals to Improve Soil in Irrigating Brackish Water

Using 10 types of natural minerals as amendment agents of soil, we experiment of improving soil by irrigating mineralize degrees 4.05.0 g/L brackish water to farmland . The results show that the first amendment agent can reducesoil unit weight 12.23%, increase soil porosity 12.28%. Amendment agents take part in a experiment can reduce soil salt content at most to 72.5% in soil depth of 05 cm and reduce soil anion CO_3~(2-) and HCO_3~- at most to 100%. The fourth amendment agent has affects of increasing Ca~(2 ),Mg~(2 ) and reducing K~ Na~ in soil depth of 040cm. Natura minerals amendment agents of soil have taken a turn for better physical and chemistry environment of soil.