一、粮棉生产面临的任务、挑战和问题１人口—资源—粮棉生产发展的矛盾。我国现代化的进程中面临许多长期不容忽视的问题与挑战，如人口持续膨胀、粮食需求迅速扩张、农业资源日益紧张、环境生态日趋恶化等。其中，由资源与人口矛盾派生的食物安全问题尤为突出。在严格... I. Tasks, Challenges and Problems Confronting Grain and Cotton Production 1. Conflicts between population, resources and grain and cotton production and development. In the process of our country’s modernization, we have faced many problems and challenges that we can not ignore in the long run, such as the continuous population expansion, the rapid expansion of food demand, the increasingly tense agricultural resources and the worsening of the ecological environment. Among them, the problem of food safety derived from the contradiction between resources and population is particularly outstanding. In strict ...