摘要
白云石改良酸性黄红壤三年定位试验结果表明：酸性黄红壤施用白云石可以降低土壤交换性铝的含量，提高土壤pH值和交换性钙、镁的含量，显著提高作物产量，且有明显的后效。第1—6季作物分别增产10．8％-13．4％、21．5％-48．6％、9．4％-16．2％、10．9％-44．6％、7．9％-22．0％和6．6％-29．8％。白云石施用量为600kg hm^-2时，降酸作用可维持3季作物以上；白云石施用量为2500kg hm^-2时，降酸作用可维持6季作物以上。
The results of the three - year field location experiment showed that the application of dolomite could increase soil pH, decrease soil exchangeable A1 content, and increase exchangeable Ca, Mg contents and crop yield significantly. The 1 -6 season crops yield increased by 10.8% - 13.4% ,21.5% -48.6% ,9.4% - 16.2%, 10.9% - 44.6% ,7.9% -22.0% and 6.6% -29.8%, respectively. The results also showed that the application of dolomite had residual effect which depended on its application rates. When the amount of dolomite application was 600kg ha^-1, the effect of reducing soil acidity could last for 3 seasons,while it was 2500 kg hm^-2, the effect could last over 6 seasons.
出处
《土壤通报》
CAS
CSCD
北大核心
2006年第4期723-726,共4页
Chinese Journal of Soil Science
基金
北美钾磷研究所/加拿大钾磷研究所(PPI/PPIC)资助项目
关键词
白云石
酸性黄红壤
产量
化学性质
Dolomite
Acid red - yellow soil
Yield
Chemical properties
