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在麦-稻-稻和麦-玉米-稻两种种植方式６年定位试验的基础上，对稻田年内水旱轮作的后效应进行了研究。结果表明：年内水旱轮作能显著地提高后作晚稻和大麦产量，但后效持续时间不长，到第三季后作物早稻增产已不明显。生产上两种种植方式以隔年轮换为好。增产的主要原因是年内水旱轮作改善土壤通透性，能增加土壤有效氮、磷、钾含量和提高根系活力，促进了作物生长和养分吸收，从而增加晚稻有效穗、结实率和实粒数，增加大麦有效穗和千粒重。试验也表明，增施肥料会降低轮作效果。
Based on the six-year positioning experiment of two wheat-rice-rice and wheat-corn-rice cultivation methods, the post-crop rotation and drought response in the paddy field was studied. The results showed that during the year, the yield of late rice and barley increased remarkably after the rotation and drought, but the duration of after-effects did not last long. It is not obvious that the yield of early rice increased after the third season. The production of the two planting methods to alternate every year as well. The main reason for the increase in production was the improvement of soil permeability during the year of rotation and the increase of available N, P and K contents in the soil and the increase of root vigor, and the increase of the effective panicles, the seed setting rate and the seed number of late rice , Increase barley effective spike and 1000 grain weight. Experiments also show that fertilizers are added to reduce the rotation effect.