Photosynthetic Characteristic and Nutrient Absorption Characteristic of TwoGrafted Cucumber Seedlings Study on Root Growth Dynamic Characteristics of Grafted Seedlings of Different Camellia oleifera Cultivars Study on growth situation, photosynthetic characteristics and nutrient absorption characteristics of grafted cucumber seedlings Photosynthetic Characteristic and Nutrient Absorption Characteristic of TwoGrafted Cucumber Seedlings Studies on effects of two cucumber scions on growth situation at same rootstock