化肥减施下低用量生物黑炭对红壤肥力质量的影响  

Effects of Low-dose Biochar on the Soil Fertility in Red Soil under Chemical Fertilizer Reduction

作　　者：段红霞[1] 夏桂龙[1] 欧阳建平[1] 赵仲仁[1] 杨雨春 周晓丰 DUAN Hong-xia;XIA Gui-long;OUYANG Jian-ping(Institute of Agriculture Science,Plantation of Dengjia Town of Jiangxi Province,Yujiang,Jiangxi 335200)

机构地区：[1]江西省邓家埠水稻原种场农科所,江西余江335200

出　　处：《安徽农业科学》2018年第33期121-122,129,共3页Journal of Anhui Agricultural Sciences

基　　金：江西省自然基金项目(20151BAB214008)

摘　　要：[目的]实现化肥减施增效、提高红壤旱地的肥力水平和作物产量。[方法]在化肥减施条件下结合低用量的生物黑炭(750 kg/hm2),分析玉米产量和土壤肥力变化。[结果]与化肥处理相比,生物黑炭配施处理的产量较高,早玉米和晚玉米分别比化肥处理增加了28.67%～44.69%和23.26%～45.19%。同时,生物黑炭配施石灰或过氧化钙显著阻控土壤酸化,土壤pH提高了0.26～0.47;土壤有机质和速效氮磷钾养分也显著提升,进而显著提高了土壤肥力质量指数。[结论]较低用量的生物黑炭配施石灰或过氧化钙是红壤旱地值得推广的土壤培肥技术。[Objective]To improve the soil fertility and crop yield in red soil.[Method]Field experiment was carried out which included low-dose biochar(750 kg/hm 2)under chemical fertilizer reduction,then,the soil fertility and fresh maize yield were analyzed.[Result]The yield in biochar was the highest in all treatments.Compared with chemical fertilizer treatment,the yields of early and late fresh maize were increased by 28.67%-44.69%and 23.26%-45.19%.Meanwhile,biochar also significantly inhibited soil acidification,their soil pH values were increased by 0.26-0.47;thus,their soil organic matter and available nitrogen,phosphour and potassium contents also were increased significantly;the soil fertility quality index were significantly improved in biochar treatments.[Conclusion]The low-dose biochar is one of worthy techniques for improving soil fertility under chemical fertilizer reduction in red soil.

关 键 词：化肥减施 低用量生物黑炭 玉米产量 土壤肥力质量指数 

分 类 号：S158.5[农业科学—土壤学]