关键词: 优化, 优化

Abstract:

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 direct seeding rice aftereffect should be understood impersonality, the planting technical and the yield risking should be popularization by the increasing of publicizing and direction, the whole idea of rice safety yielding should be confirmed, the planting distribution should be in science ideas, and direct seeding rice yield should be leading from the continuance point in whole agriculture system.