Effect of cadmium stress on physiological characteristics of garlic seedlings and the alleviation effects of exogenous calcium. Effects of silicon on growth, photosynthetic characteristics and quality of garlic seedlings Influence of Nitrogen and Sulfur Interaction on Growth and Antioxidant Enzymes Activities of Garlic Seedlings Effects of calcium on growth, photosynthetic characteristics and quality ofaquicultural garlic seedlings Effects of boron content in nutrient solution on photosynthetic characteristics and quality of garlic seedling