利用养分渗漏池，研究了水旱轮作下氮肥品种、用量对氯素在紫色土中的移动、淋失影响。结果表明，旱作和淹水期间随生育期推移，氯离子逐渐移动到土体的中下部：氯化铵比尿素增加了氯离子淋失量，并随氯化铵用量的增加而增加：水田比旱地的氯离子淋失率高２百分点：建议水旱轮作中含氯化肥优先分配于水田，并控制用量。 Utilizing nutrient infiltration pool, the effects of nitrogen fertilizers and amount on the movement and leaching of chlorin in purple soil were studied. The results showed that chloride ion gradually moved to the middle and lower part of soil body during the period of drought and waterlogging. Chloride leaching increased chloride leaching loss more than urea and increased with the increase of ammonium chloride content. Paddy field 2 percentage points higher than the rate of loss of chloride ion in dryland: It is suggested that the priority should be given to the allocation of chlorine-containing fertilizers in paddy fields to control the amount of chloride ion.