钙肥型土壤调理剂在设施番茄生产中的应用

Application of Calcium Soil Amendment in Greenhouse Tomato Production

采用室内培养与田间试验研究钙肥型土壤调理剂对克服盐碱地土壤障碍及设施番茄产量和品质的影响。结果表明,在室内培养条件下钙肥型土壤调理剂处理浓度为1.50mg.kg-1时,可以显著提高土壤的交换性Ca2+和Na+的比例,有效降低土壤交换性Na+含量、pH、EC和全盐含量;田间增施钙肥型土壤调理剂后显著提高设施番茄的产量和品质,与空白对照相比,番茄产量提高18.7%,果实的可溶性固形物含量增加20.2%、可滴定酸含量减少23.1%,土壤交换性Ca2+含量增加34.0%,明显改善设施土壤的理化性状。

Lab incubating and field experiments were conducted in order to study the influence of calcium soil amendment on soil properties of saline soil, yield and quality of tomato produced in greenhouse. The results showed that the dormant calcium soil amendment could change the ratio of exchangeable Ca^2＋ and Na^＋ , decrease exchangeable Na^ ＋ , pH, EC and total salt contents. The optimized applying rate was 1.50 mg · kg^-1. Results from field experiment showed that increasing application of calcium soil amendment could notably improve the yield and quality of tomato produced in greenhouse. Compared with the control treatment, the yield of tomato was increased by 18.7 % and the soluble solid content increased by 20. 2 % , titratable acid reduced by 23.1% and exchangeable calcium content was increased by 34.0 %. The soil physic-chemical characteristics in greenhouse is evidently improved.