不同剂量石灰对酸化稻田土壤养分含量及水稻产量的影响  

Effects of Different Application Doses of Lime on Acidification Paddy Soil and Rice Yield

作　　者：杨静 谭永锋[2] 肖志强[2] 刘建华[2] 龙卫平[2] 匡大春[2] 韦赵海[2] 刘益仁[3] 

机构地区：[1]江西省吉安市土壤肥料站,江西吉安343000 [2]江西省泰和县农技推广中心,江西泰和343700 [3]江西省农业科学院土壤肥料与资源环境研究所,江西南昌330200

出　　处：《安徽农业科学》2015年第36期175-176,179,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划项目(2012BAD05B05);公益性行业(农业)科研专项(201203030);国家自然科学基金项目(31460544);江西农科院博士基金项目(2012CBS011)

摘　　要：[目的]为农业上产上酸性土壤改良提供理论依据。[方法]采用田间试验方法,考察施用石灰对酸化水稻土壤和作物生长的影响,筛选出适宜该区域土壤条件和耕作制度下酸性水稻土壤上农用石灰的使用剂量。[结果]在酸化稻田施用600~750 kg/hm^2农用石灰能明显提高土壤p H,且随着石灰用量的增加,p H增加越多。施用石灰能明显提高土壤碱解氮含量。施用600~750 kg/hm2石灰能明显促进水稻分蘖,提高水稻有效穗数,增加每穗实粒数和结实率,最终达到促进水稻产量提高的目的。在酸性水稻土上,以施用600~750 kg/hm^2石灰时效益最高。[结论]在p H 5.0左右的酸性稻田上,以施用600~750 kg/hm^2石灰时的效果最佳。[Objective] The research aimed to provide theoretical basis for acidic soil improvement in agricultural production. [Method] We carried out field experiments to study the effects of lime application on acidification paddy soil and rice growth,and selected the lime application dose for acid paddy soil under local soil conditions and farming systems. [Result] The application of 600- 750 kg / hm^2 agricultural lime could significantly improve soil pH,and soil pH increased with the increase of the lime amount. Application of agricultural lime could significantly increase soil alkaline hydrolytic nitrogen content. The application of 600- 750 kg / hm^2 agricultural lime could significantly promote rice tillering,and increase rice panicles,filled grains per panicle and seed setting rate. Therefore,rice yield was increased. The application of 600- 750 kg / hm^2 agricultural lime could significantly increase economic benefits. [Conclusion]The application of 600- 750 kg / hm^2 agricultural lime has the best effects on soil improvement and crop growth in pH 5. 0 acidification paddy soil.

关 键 词：农用石灰 酸化土壤 水稻 土壤养分 

分 类 号：S156.6[农业科学—土壤学]