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采用田间小区试验研究不同施肥结构和酸调理剂对由第四纪红土发育的酸性红菜园土的有机质、酸性以及交换性能的影响。结果表明,化肥+石灰(NPK+CaO)和化肥+氧化镁(NPK+MgO)处理的土壤pH极显著高于其他各处理,并且能显著降低土壤交换态铝的含量,而酸化调理剂2号(NPKSR2)对土壤pH的提高又显著高于其他各处理,土壤pH与土壤交换性铝离子呈负相关;各施肥处理均能提高土壤有机质含量,以化肥+菜枯(NPK+OM)处理效果最佳,该处理土壤有机质含量平均达16.71g/kg,酸化调理剂2号(NPKSR2)也能显著提高土壤有机质含量;化肥+石灰(NPK+CaO)和化肥+氧化镁(NPK+MgO)处理提高土壤阳离子交换量(CEC)和有效阳离子交换量(ECEC)效果最显著,酸化调理剂2号(NPKSR2)又优于其他各处理,化肥+氧化镁(NPK+MgO)处理能有效提高土壤交换性盐基离子各组成的含量;化肥(NPK)和酸化调理剂2号(NPKSR2)处理均能缓慢提高蔬菜作物产量,而其他各处理蔬菜作物产量均不稳定。
Field experiments were conducted to study the effects of different fertilization structures and acid conditioners on the organic matter, acidity and exchangeability of acid red garden soil developed from Quaternary laterite. The results showed that the pH of soil treated with fertilizer + lime (NPK + CaO) and fertilizer + magnesium oxide (NPK + MgO) was significantly higher than that of other treatments and significantly decreased the content of exchangeable aluminum (NPKSR2) was significantly higher than that of other treatments. The soil pH was negatively correlated with soil exchangeable aluminum ions. All the fertilization treatments could increase soil organic matter content, with the effect of NPK + OM treatment (NPK + CaO) and NPK + MgO (NPK + MgO) treatment could significantly improve the content of soil organic matter, and the soil organic matter content of the treatment reached an average of 16.71g / kg and NPKSR2 (CEC) and effective cation exchange capacity (ECEC) were the most significant. Acid treatment conditioner NPKSR2 was superior to other treatments. Fertilizer + magnesium oxide (NPK + MgO) treatment could effectively improve soil exchange The contents of various salts and base salts were all increased. NPK and NPKSR2 treatments could increase the yield of vegetable crops slowly, while the output of other vegetable crops was not stable.