一、高塝田:这类田地势较高,阳光充足,春、夏、秋三季地温也较高,有利水稻的发育,但土质粘重,土层浅薄,保水保肥力都很差,加以水源很少,灌溉不便,常受旱灾威胁,农民为了预防夏末秋初的干旱,插秧时关水很深,以致妨碍水稻前期分蘖,但一遇干旱,田土的龟裂仍然很大,影响水稻正常生长,所以这类田的水稻,禾苗一般发棵较少,茎秆细矮,穗短粒少,产量很低。改变高塝田 First, Takahata field: This type of field is relatively high, sunny, spring, summer and autumn is also relatively high temperature, conducive to the development of rice, but the soil sticky, shallow soil, water and fertilizer are poor, with little water In order to prevent the drought in late summer and early autumn, the farmers shut off the water very deeply when they transplanted rice, which hindered the early tillering of rice. However, in the case of drought, the cracks in the soil were still very large, which affected the normal growth of rice, Therefore, these fields of rice, seedlings generally less hair stalks, short stalk, ear spike short, the yield is very low. Change Gao Tian field