Retraction Note: Comparative analysis of nutritional components of maize with different planting densities from the perspective of ecological environment

The yield and quality of maize grains are determined by genotype environmental factors. Through a systematic comparison the density effects different plant-type varieties grown on land under four ecological environments in certain province, differences regions, reasons for were analyzed. results showed that light, accumulated temperature, precipitation important differences, these factors also key affecting grain quality. Taking southern zone as an example, planting densities content nutrients such protein, starch, fat studied. study found with increase density, protein decreased significantly, while increasing decreasing trend fat, starch (PFSC) was more complicated. By formulating varieties, other related control measures to make full use resources give play regional advantages, high-quality high-yield can be achieved.