不同改良物料及其配施组合对黄河三角洲滨海盐碱土的改良效果

发布时间：2018-12-29 09:26

【摘要】：以玉米为研究对象,在盆栽条件下,探究脱硫石膏、蚯蚓粪、硫磺、糠醛渣、沸石对土壤改良的效果,并据此设计改良剂配施组合,研究不同改良剂配施组合对玉米生长发育及土壤性状的改良作用。结果表明:在0—20cm土层中,脱硫石膏、硫磺、糠醛渣、蚯蚓粪、沸石处理的土壤pH值均有不同程度的降低,轻度盐碱条件下降低了0.05~0.19个单位;中度盐碱条件下降低了0.20~0.33个单位。脱硫石膏可显著降低0—20cm土层水溶性Na~+含量。根据不同改良剂的改良特点,设计了T1(脱硫石膏+硫磺+蚯蚓粪)和T2(蚯蚓粪+沸石+脱硫石膏+糠醛渣)两种具有综合改良效果的改良剂配施组合,均能显著增加玉米植株生物量,在轻度盐碱条件下,较空白处理分别增加了77.75%和129.22%;中度盐碱条件下,分别增加了148.13%和170.31%。并且各配施处理(T1和T2)均能降低0—20cm表层土壤的pH。在滨海盐渍土中施用综合改良剂能促进作物生长和改善土壤性状,可以作为未来滨海盐渍土快速改良的重要措施之一。
[Abstract]:The effect of desulphurization gypsum, earthworm dung, sulfur, furfural residue and zeolite on soil improvement was studied under pot culture. The effects of different modifiers and combinations on maize growth and soil properties were studied. The results showed that the pH values of desulfurized gypsum, sulfur, furfural residue, earthworm dung and zeolite in 0-20cm soil layer were decreased to some extent, and 0.05 ~ 0.19 units were decreased under mild saline-alkali condition. Under moderate saline-alkali condition, 0.20 ~ 0.33 units were decreased. Desulphurization gypsum can significantly reduce the content of water soluble Na~ in 0-20cm soil layer. According to the improvement characteristics of different modifiers, two modifiers, T1 (desulphurized gypsum sulfur earthworm dung) and T2 (earthworm cast zeolite desulphurized gypsum furfural residue), were designed. The biomass of maize plants was increased by 77.75% and 129.22% respectively under mild saline-alkali condition. Under moderate saline-alkali condition, the contents increased by 148.13% and 170.31%, respectively. All treatments (T1 and T2) can reduce the pH. of 0-20cm topsoil. The application of comprehensive modifier in coastal saline soil can promote crop growth and improve soil properties, and can be used as one of the important measures for rapid improvement of coastal saline soil in the future.
【作者单位】：中国农业大学资源与环境学院;山东省黄河三角洲农业高新技术产业示范区;
【分类号】：S156.42

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