沿海地区直播稻种植后效应及其思考

江苏沿海地区直播稻连茬种植后优劣效应共显，直播稻可以直接节省种植用工，改变水稻病虫发生危害特点，调整了稻田土壤理化性质，使得养分等有利生长因素在土壤表层富集，种植收益相对稳定，但杂草（稻）危害逐年加重，水稻安全生产的风险增加。因此，应客观认识直播稻栽培后效应，加大宣传与指导力度，普及直播稻栽培技术及生产风险，树立粮食安全生产的全局观念，科学规划种植布局，从整个农业生态系可持续发展的观点来指导直播稻生产。

Direct Seeding Rice Aftereffect and Its Cognition in Coastal Areas

The advantage and disadvantage effect were shown together after direct seeding rice planting in a series in coastal areas,and it could save the workload directly,change the style of insect and disease,adjust the soil physical and chemistry character that nutrient and the other growing factors were enrichment in surface layer,so the planting income was stable comparatively.While the occurring of weeding(weeding rice) were aggravation year after year,and the risking of safety yielding was intense.So the direc...