Effects of Sub-Irrigation Gradients on Growth and Nutrient Status of Containerized Seedlings of Quercus variabilis A Discussion on the Appraisable Indices for the Quality of Containerized Slash Pine Seedling Advantage and Techniques of Containerized Seedling of Psammophyte Effect of Substrate Ratio and Slow-release Fertilizer Dose on the Growth of Containerized Cyclobalanopsis gilva Seedlings STUDY ON GROWING MEDIUM AND GROWTH LAW FOR CONTAINERIZED SEEDLING STOCKS GROWN IN GREENHOUSE