水旱轮作是沿海地区改良盐碱地的重要途径

Alternation of Water Lodging and Drying Farming in Improving Salt-alkaline Land in Coastal Areas

沿海地区实行水旱轮作，可以改善土壤结构，提高土壤肥力，扩大灌溉面积，提高单产和总产量；能够控制或消灭杂草，减少病虫害；能够合理调剂劳动力和提高机具利用率；有利于实行有机农业，发展畜牧业，开展多种经营；可以建立起合理的水肥平衡，抑制返盐，促进脱盐；可以培肥改土，消除碱害。

To practice the alternation of water lodging and drying farming in coastal areas,can ameliorate soil texture, improve soil fertility, enlarge irrigated land, and raise the grainyield and output of land. It can also benefit the controlling of weeds and reducing the damagefrorrl plant diseases and insect pests, adjusting rationally labor force and improving machineand tools use efficiency. It is of some advantage to organic agriculture practicing, poultrybreeding and multi-businesses conduction. By this way, the rational water-fertilizer equilibrium can be set up, which also benefit the salt soil to be improved by setting out salt, andfertilizer soil by getting rid of alkaline.