Bio:
Email: 3319956225@qq.com
王少杰(1997—),男,硕士研究生,研究方向为新型肥料应用;3319956225@qq.com
为探究不同碳源与磷石膏配施对盐渍化设施土壤的修复效果以及对小白菜生长的影响,开展了田间小区试验,共设置对照(CK)、磷石膏(P)、有机肥(OF)、生物炭(B)、磷石膏+有机肥(P+OF)、磷石膏+生物炭(P+B)等6个处理。结果表明:P+B处理的效果较好,土壤铵态氮含量较CK处理的显著提高58.88%,硝态氮和水溶性总盐含量分别显著降低37.32%和30.23%,Na+和NO3-含量分别显著下降58.83%和55.81%;P处理的Ca2+含量较CK处理的显著增加9.94%;与CK处理相比,不同碳源配施磷石膏可显著提高土壤脲酶、蔗糖酶、过氧化氢酶的活性;与CK处理相比,P+B处理的小白菜根长、根系活力、维生素C含量、可溶性蛋白含量分别显著提高26.93%、51.39%、102.86%、199.80%,硝酸还原酶的活性显著增强,同时降低了硝酸盐含量和过氧化物酶、过氧化氢酶的活性。P+B处理可以有效降低设施土壤次生盐渍化危害,提高小白菜的产量和品质。
In order to investigate the effect of different carbon sources combined with phosphogypsum on remediation of salinized facility soil and the growth of Pakchoi, a field plot experiment is conducted, with a total of six treatments including control (CK), phosphogypsum (P), organic fertilizer (OF), biochar (B), phosphogypsum+organic fertilizer (P+OF), and phosphogypsum+biochar (P+B). The results show that P+B treatment has a better effect, with a significant increase of 58.88% in soil ammonium nitrogen content compared to CK treatment, a significant decrease of 37.32% and 30.23% in nitrate nitrogen and water-soluble total salt content, and a significant decrease of 58.83% and 55.81% in Na+ and NO3- content, respectively. P treatment significantly increased Ca2+ content by 9.94% compared to CK treatment. Compared with CK treatment, the application of different carbon sources combined with phosphogypsum can significantly increase the activities of soil urease, sucrase, and catalase. Compared with CK treatment, P+B treatment significantly increased the root length, root activity, vitamin C content, and soluble protein content of Pakchoi by 26.93%, 51.39%, 102.86%, and 199.80%, respectively. The activity of nitrate reductase is significantly enhanced, while the nitrate content and the activities of peroxidase and catalase are reduced. P+B treatment can effectively reduce the secondary salinization hazards of facility soil and improve the yield and quality of Pakchoi.
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