不同施肥模式对砒砂岩与沙复配土壤养分影响研究

为了提高砒砂岩与沙复配土壤质量,寻求最优的施肥模式,本研究基于室内盆栽试验,分析了不施肥、单施有机肥、基于农户习惯有机无机配施和单施化肥四种施肥模式对复配土壤养分的影响。结果表明：(1)基于农户习惯有机无机配施模式下土壤中的总碳和有机碳含量明显高于其他三种施肥模式;(2)单施化肥模式下土壤中的硝态氮含量最高,基于农户习惯有机无机配施模式下土壤中铵态氮含量最高;(3)基于农户习惯有机无机配施模式施肥时土壤中的有效磷含量显著高于单施化肥、单施有机肥和不施肥三种模式;(4)从环境保护和提高土壤质量的角度应优先选择有机无机配施施肥模式。研究成果以期为砒砂岩与沙复配土壤质量提高提供参考。

Effects of different fertilization patterns on soil nutrients of sandstone and sand compounding

In order to improve the soil quality of sandstone and sand complex, and to find the optimal fertilization mode, this study is based on indoor pot experiment and analyzes four types of organic fertilizers, organic and inorganic fertilizers and single fertilizers. The effect of fertilization mode on compounds soil nutrients. The results showed that: (1) The total carbon and organic carbon content in the soil was significantly higher than that in the other three fertilization modes based on the farmers" customary organic-inorganic application mode; (2) The content of nitrate nitrogen in soil was the highest under single fertilizer application mode, and the content of ammonium nitrogen in soil was the highest based on the organic and inorganic application mode of farmers; (3) The effective phosphorus content in the soil was significantly higher than that of single application of chemical fertilizer, single application of organic fertilizer and no application of fertilizer based on the organic and inorganic application mode of farmers; (4) The organic-inorganic combined fertilization mode should be preferred from the perspective of environmental protection and improvement of soil quality. The research results are intended to provide references for the improvement of soil quality in the sandstone and sand complex.