排水不良稻田是指全年土壤表土含水量在最大容量以上的稻田,通常包括湛水田.这种稻田的土壤溶液中Ca/K偏高、常导致K的缺乏,如果稻田出现红泉、还会诱发缺Mn,同时在水稻生育中期由于有机物的分解产生过多的N,而使水稻易患稻热病、还会 Poorly drained paddy fields are paddy fields that contain more than the maximum water content of the topsoil throughout the year, and usually include Zhan paddy fields, which have high levels of Ca / K and often lead to a lack of K. If there is a red spring in the paddy field, Induction of lack of Mn, while in the middle of rice growth due to the decomposition of organic matter to produce excessive N, leaving rice susceptible to rice fever, but also