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中国农学通报 ›› 2010, Vol. 26 ›› Issue (15): 266-269.

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

石灰施用对酸性土壤养分状况和甘蔗生长的影响

敖俊华 黄振瑞 江永 邓海华 陈顺 李奇伟   

  • 收稿日期:2010-02-24 修回日期:2010-04-23 出版日期:2010-08-05 发布日期:2010-08-05
  • 基金资助:

    国家甘蔗产业体系建设;农业部公益性行业(农业)科研专项;广东省科技计划项目

Effects of applying lime on the properties of acid soil and the growth of sugarcane

  • Received:2010-02-24 Revised:2010-04-23 Online:2010-08-05 Published:2010-08-05

摘要:

土壤pH低,酸化严重是湛江蔗区甘蔗生产的产要限制因子之一。为了提高甘蔗产量,改善酸性
土壤障碍因素,采用土壤培养试验与甘蔗盆栽试验相结合,研究了施用石灰对酸性土壤养分状况和甘
蔗产量、糖分的影响。土壤培养试验结果表明:石灰施用量与供试酸性土壤pH、氮、钙、镁、硫、硅等有效
含量呈显著正相关,而与铁、锰的有效性呈显著负相关,说明通过合理施用石灰,可以显著提高土壤pH
和改善土壤各有效养分状况,从而提高酸性土壤生产力。桶栽试验结果也表明:在湛江蔗区强酸性土
壤上,合理施用石灰可以提高甘蔗产量和糖分,当每千克土壤施用石灰1.2 g,甘蔗产量和糖分分别比对
照提高14.2%和2.4%,当石灰施用过多,单位石灰增施量对蔗茎产量和糖分表现出负效。

关键词: 茶油, 茶油, 理化特性, 脂肪酸组成, 功能特性, 发展前景

Abstract:

Low pH and severe acidification was a major constraint to sugarcane productivity in the sugarcane
region of Zhanjiang. In order to improve the sugarcane production and modify the acid soil limiting factors, the
effect of applying lime in acid soil on soil properties and the yield,sugar content in sugarcane was examined by
using the soil culture experiment and pot experiment. The results of the soil culture experiment showed that the
lime applied was significantly positive correlated with the pH value and the availability of nitrogen, calcium,
magnesium, sulfur, silicon, but the availability of iron, manganese was significantly negatively correlated in the
test soil. It was means that the rational application of lime in acid soil can increase soil pH value and improve
the available nutrients so that improve the acidic soil productivity. The results of pot culture experiment also
showed that lime applied in acid soil, the yield and sugar content of sugarcane improved significantly, As one
kilogram soil supplied with 1.2 gram lime, the cane yield and sugar content were increased by 14.2% and
2.4%. But when lime application too much, the unit of increase the amount of lime on cane yield and sugar
content showed a negative effect.