【摘要】 在湖南省水稻主产区进行不同石灰施用量对酸性土壤的改良试验,结果表明,施用生石灰能提高土壤pH值、降低土壤交换性氢和交换性铝含量,增加土壤盐基离子含量,增产效果显著。施用生石灰粉50~100 kg/667m2对于酸性水稻土(初始土壤pH值4.5~5.4)改良有较好的应用效果,种植水稻施用生石灰75kg/667m2的增产效果较好,种植烤烟施用生石灰100kg/667m2的增产效果较好。更多还原

【Abstract】 The field test of different lime application rate in acid soil was conducted in main rice producing areas of Hunan.The tests indicate that using quick lime on acid soil can enhance soil pH,decrease exchangeable hydrogen and exchangeable aluminum,increase base cation.The effect of increasing production is obvious.Using quick lime 50 kg/667m2-100 kg/667m2 on acid paddy soil(initial soil pH value 4.5~5.4)have a better amelioration effect.Using quick lime 75kg/667m2 under the condition of rice planting has a better increasing yield effect,and using quick lime 100 kg/667m2 under the condition of flue-cured tobacco planting has a better increasing yield effect.更多还原