Using the plant soilless cultivation method， about two leaves a corn seedling to experience deficiency The missing element for K After three weeks of training to take out and maize physiological and biochemical indexes measuring， experimental results show that the deficiency of the corn seedling cultivation， the growth of the training of the obvious difference YuQuanSu corn seedling， and the deficiency symptoms performance in different Deficiency the raise， plant growth rate drop， rootshoot ratio changed， for plant growth and has great influence on
