Effects of Sub-Irrigation with Different Water and Fertilizer Supplies on Growth,Media pH and Electric Conductance of Containerized Larix principis-rupprechtii Seedlings Effect of Cultivation Management on the Growth Characteristics and Biomass Components of Miscanthus sacchariflorus Effects of bicarbonate with identical layer of water and fertilization at the same soil zone on growth and nutrient uptake of maize plants High-yielding cultivation practices of winter wheat in large acreage