不同波段光照对土壤养分活化过程研究

Study on Soil Nutrient Activation Process by Different Bands of Light

摘要: 光照过程能够使得土壤养分元素从原来的惰性状态被激活，通过研究土体活化技术，加速土壤中养分的转化效率，从而降低生产过程中化肥的使用，进一步减少化肥的过量使用所带来的土壤污染问题。本研究以通过室内光照实验方法，设定光照波段为可见光、红外光、紫外光，以放置在暗处的土壤为对照，研究不同波段光照对于土壤养分活化过程的影响。结果表明：不同波段光照首周对于土壤全氮含量的提升较高，全氮含量首周均提升50%；红外、紫外、可见光三种光照对土体速效钾含量均有增加的作用，特别是紫外光对于土壤速效钾的活化作用明显；在不同波长光照情况下，土壤有效磷含量较初始有效磷含量提升效果均在100%之上，最大提升量接近200%；红外、紫外、可见光光照对土体活性有机碳含量均有降低的作用。实验结果在土地复垦和土壤改良等方面具有重要参考意义。

Abstract: Illumination can activate the soil nutrient elements from the original inert state, thereby reducing the use of fertilizers in the production process. In this study, the effects of different bands of light were studied by using the indoor illumination experiment method, the illumination band set to visible light, infrared light and ultraviolet light, and the soil placed in the dark as a control. The results showed that: the first week of different bands of light increased the total nitrogen content of the soil, and the total nitrogen content increased by 50% in the first week; the infrared, ultraviolet and visible light increased the available potassium content of the soil. The effect of ultraviolet light on the activation of soil available potassium is more obvious; under different light conditions, the effective phosphorus content of the soil is all higher than the initial effective phosphorus content by 100%, and the maximum increase is close to 200%; infrared, ultraviolet and visible light have the effect of reducing the content of active organic carbon in the soil. Experiments have shown that light has an activation effect on the components in the soil and has further research value.