一、平整好插秧大田水稻需要生育在土壤肥沃、耕层深厚松软、通透性好、地面平整的环境里,因此,平整好插秧大田是夺取水稻增产的重要一环。如果稻田高低不平,洼的地方水淹造成死苗,高的地方返盐,秧苗有的被烧死,有的被晒死。特别近年来发展卷秧、无土育秧等新技术,培育的秧苗只有3寸高,幼苗生长缓慢,更需要精细平田。水稻虽是喜水作物,但不同的发育阶段需水情况不一样,多年灌溉试验资料证明,水稻采取浅灌晒田的灌溉制度可省水高产。如苗期需要浅水促蘖;分蘖末期需要排水烤田,控蘖促根;孕穗期需要大水保胎;灌浆期需 First, the smooth transplanting paddy rice needs fertility in the fertile soil, deep and soft plow, good permeability, the ground level environment, therefore, a good field transplanting rice is to seize the important part of rice yield. If the rice fields are rugged, the flooding of the depressions will result in dead seedlings and salt return to high places. Some of the seedlings will be burned to death and some will be sun-dried. Especially in recent years the development of roll seedlings, soilless seedlings and other new technologies, nurturing the seedlings only 3 inches high, slow growth of seedlings, but also the need for fine Hirata. Although rice is a hi-water crop, water demand is not the same at different developmental stages. Years of irrigation trial data show that the rice irrigation system using shallow irrigation can save water and produce high yield. Such as seedling need shallow water to promote tillering; the last need to drain tiller tillering, tillering and root control; booting need big water and tire protection; filling needs