这项发明是把硝基腐植酸和含镁的物质进行反应,使腐植酸变成镁盐的形式,作为土壤改良剂的一种制造方法。所谓改良土壤,就是增加土壤的团粒结构,使土壤,具有通气透水、保持适度水份等植物生长的良好性能,并能防止肥料流失。通常所说的软质土壤,意味着土壤的物理性能良好,适合萝卜、芋之类块茎作物的栽培。不言而喻,土壤物理性能将直接影响植物的生长。因而对土壤物理性能的改善,应该很好加以研究。但土壤改良,不仅要很好研究前述的物理效果,也必须很好研究化学效果。也就是说,在考察土壤的现实状态时,对缺乏养分的土壤,特别是日本缺乏镁和硅酸的土壤,广泛存在。因此镁硅的补给很有必要。特别是对于火山灰土壤,从防止磷酸固定、土壤的盐基置换容量增大和防止各种肥 This invention reacts nitro humic acid with a magnesium-containing substance to convert the humic acid into the form of a magnesium salt as a method of making a soil conditioner. The so-called improved soil, is to increase the aggregate structure of the soil, so that the soil, with ventilation and water to maintain proper moisture and other plant growth and good performance, and prevent fertilizer loss. The so-called soft soil, which means that the physical properties of soil is good, suitable for radish, taro and other tuber crops. It goes without saying that soil physical properties will directly affect plant growth. Therefore, the improvement of soil physical properties should be well studied. However, the improvement of the soil not only requires a good study of the aforementioned physical effects, but also a good study of chemical effects. In other words, when studying the real state of the soil, there is widespread presence in the soil lacking nutrients, especially in Japan, which lacks magnesium and silicic acid. Therefore, the supply of magnesium is necessary. Especially for volcanic ash soils, from the prevention of phosphoric acid fixation, the replacement of soil-based basalts with increased capacity and prevention of various types of fertilizers