Combinatorial Effects of Glycine and Inorganic Nitrogen on Root Growth and Nitrogen Nutrition in Maize (Zea mays L.)

Organic and inorganic nitrogen play important roles in plant nutrition. However, how the coapplication of organic affects root growth, metabolism, soil content is still unclear. Plant shoot uptake were studied maize (Zea mays L.) through pot experiments with different treatments, including NH4+ -N (Amm), NO3− (Nit), + (Amm Nit), glutamate-N Nit Glu), glycine-N Gly). The results show that treated Amm Gly was highest among all treatments. In addition, glycine increased glutamine synthetase (GS) activity leaves, promoted metabolism levels, conducive to accumulation amino acids soluble protein leaves. Compared nitrogen, combined total length surface area. A correlation analysis showed area had a significant positive effect on uptake. When ammonium, nitrate, applied together, higher than for other Therefore, we conclude can increase content, promote thus facilitate metabolism.