![]() There is only limited information on the effects of reduced IRC and its mixture with compost or silicate fertilizer (Si) on the soil nematode community in salt–affected soils. Finally, high-strength granular rice fertilizers with a particle size of Φ2–4 mm were successfully prepared from the powdery nitrogen-phosphorus-potassium (NPK) and activated YPS mixture.Īvoidance of intensive rice cultivation (IRC) and soil amendments are potential practices to enhance soil properties. After smelting, the molten YPS can be effectively activated by water quenching, and 78.28% P, 90.03% Ca, and 77.12% Si in the YPS are activated, which can be readily absorbed by the rice roots. Ternary acidity m(SiO2)/(m(CaO) + m(MgO)) of 0.92 is suitable for the reduction smelting and activation of the slag. Results showed that the reduction smelting followed by the water quenching process can realize the reduction of phosphorite and activation of YPS synchronously. Thermodynamic analyses of SiO2-CaO, SiO2-CaO-Al2O3, and SiO2-CaO-Al2O3-MgO systems were discussed to optimize the acidity for reduction smelting. In this work, an alkaline rice fertilizer from the activated YPS was successfully prepared to use the micronutrients. The key scientific problem to use the YPS as rice fertilizer is how to activate the slag efficiently during the phosphorite reduction smelting process. Yellow phosphorus slag (YPS) is a typical industrial solid waste, while it contains abundant silicon micronutrient required for the growth of rice. Reducing their transpiration rate, which provides further tolerance to water stress during With increasing their resistance to attacks by insect pests, nematodes and diseases, and with The additional benefit of increasing Si levels in soils. Precipitation of toxic aluminum (Al3+) and manganese (Mn2+), increase of exchangeableĬalcium and magnesium and base saturation levels, and reduction of Al3+ saturation, with ![]() Promoting chemical reactions similar to those induced by limestone, including pH increase, Silicates behave similarly to calcium and magnesium carbonates in soil, In these soils, some plants such as sugarcaneĪnd rice, which have keen ability to accumulate Si in their tissues, can respond favorably to Soils in substantial quantities, various classes of soils, mainly the sandy ones, present lowĪmounts of available Si in their upper horizons. Although silicon (Si) is one of the most abundant elements found in most In this study, we aimed to provide information about the use of silicates in
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