【摘要】：以玉米為研究對象,在盆栽條件下,探究脫硫石膏、蚯蚓糞、硫磺、糠醛渣、沸石對土壤改良的效果,并據(jù)此設(shè)計(jì)改良劑配施組合,研究不同改良劑配施組合對玉米生長發(fā)育及土壤性狀的改良作用。結(jié)果表明:在0—20cm土層中,脫硫石膏、硫磺、糠醛渣、蚯蚓糞、沸石處理的土壤pH值均有不同程度的降低,輕度鹽堿條件下降低了0.05~0.19個(gè)單位;中度鹽堿條件下降低了0.20~0.33個(gè)單位。脫硫石膏可顯著降低0—20cm土層水溶性Na~+含量。根據(jù)不同改良劑的改良特點(diǎn),設(shè)計(jì)了T1(脫硫石膏+硫磺+蚯蚓糞)和T2(蚯蚓糞+沸石+脫硫石膏+糠醛渣)兩種具有綜合改良效果的改良劑配施組合,均能顯著增加玉米植株生物量,在輕度鹽堿條件下,較空白處理分別增加了77.75%和129.22%;中度鹽堿條件下,分別增加了148.13%和170.31%。并且各配施處理(T1和T2)均能降低0—20cm表層土壤的pH。在濱海鹽漬土中施用綜合改良劑能促進(jìn)作物生長和改善土壤性狀,可以作為未來濱海鹽漬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.
【作者單位】： 中國農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院;山東省黃河三角洲農(nóng)業(yè)高新技術(shù)產(chǎn)業(yè)示范區(qū);
【分類號】：S156.42

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