Vinegar Residue Substrate as Component of Mixed Substrate for Pepper Seedling Growth Effect of potassium on surface adsorption and interlayer fixation of ammonium in vermiculite Effects of Matriconditioning with Vermiculite on Germination and Germination Speed of Zoysia grass Seed Samples Preliminary Study on Soilless Cultivation Techniques of Panax quinquefolium L. Vinegar Residue Substrate as Component of Mixed Substrate for Pepper Seedling Growth