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盐碱对水稻生产的危害是指盐碱土上种植水稻或引用盐碱水灌溉所造成的水稻生理障碍。凌海市水稻种植面积约１５万亩，分布在１４个乡镇，１／２的水稻分布在属盐碱地沿海地区。近几年来，由于干旱、水源匮乏、海水倒灌、水稻生产受盐碱危害逐年加重，以插秧返青期最为突出，插
The harm of saline alkali to rice production refers to the rice physiological obstacle caused by planting rice on saline-alkali soil or referring to saline-alkali water irrigation. Linghai rice planting area of about 15 acres, located in 14 townships, 1/2 of the rice is distributed in the coastal areas of saline land. In recent years, due to drought, lack of water and intrusion of seawater, the harm of rice production has been increasing year by year due to salt and alkali.