摘要
为解决沙土结构差、漏水漏肥的问题,提高沙土的生产力,采用田间试验研究生物有机型沙地调理剂对沙土理化性质的影响。设置了4个处理:处理Ⅰ,不施肥;处理Ⅱ,复合肥300 kg hm^(-2);处理Ⅲ,单施调理剂6 t hm^(-2);处理Ⅳ,单施调理剂9 t hm^(-2)。结果表明:调理剂可以显著提高土壤养分含量,降低土壤容重,提高土壤团聚体含量和田间持水量;0~10 cm处,施用调理剂9 t hm^(-2)较对照土壤容重降低0.07 g cm-3,>0.25 mm团聚体含量和田间持水量分别提高5.1个百分点和7.4个百分点,有机质、碱解氮、有效磷和有效钾分别提高21.3%、54.5%、42.6%和56.3%。在试验用量范围内,调理剂9 t hm^(-2)施用量对沙土的改良效果最好,且0~10 cm土层改良效果优于10~20 cm。
In order to solve the problems of poor structure, water and nutrient leakage, low productivity of sandy soil, a field experiment was conducted to study the effects of bioorganic conditioner on the physicochemical properties of sandy soil. There were 5 treatments： treatment Ⅰ（CK）, no fertilizer and no soil conditioner; treatment Ⅱ, compound fertilizer 300 kg hm^-2; treatment Ⅲ, bioorganic soil conditioner of 6 t hm^-2; and treatment Ⅳ, bioorganic soil conditioner of 9 t hm^-2. The results showed that bioorganic conditioner significantly increased soil nutrient contents,reduced soil bulk density, and promoted the proportion of soil lager aggregate and field capacity. Compared with CK,treatment Ⅳ decreased bulk density by 0.07 g cm^-3 at 0-10 cm soil depth, increased the proportion of 〉0.25 mm aggregate and field water content by 5.1% and 7.4%, respectively. The contents of organic matter, alkaline hydrolysis nitrogen, available phosphorus and available potassium were increased by 21.3%, 54.5%, 42.6% and 56.3%,respectively in treatment Ⅳ compared with CK. Bioorganic soil conditioner of 9 t hm^-2 was optimal to soil improvement, and the improving effect at 0-10 cm soil depth was better than that at 10-20 cm soil depth.
作者
宋佳奇
索全义
赵炳全
高昕
王瑞清
SONG Jia-qi;SUO Quan-yi;WANG Rui-qing;GAO Xin;ZHAO Bing-quan(Inner Mongolia Agricultural University/Key Laboratory of Soil Quality and Nutrient Resources of the Inner Mongolia Autonomous Region,Hohhot 010019,China;Ordos Wantong Agriculture and Animal Husbandry Technology Co.Ltd.,Inner Mongolia,Ordos 017000,China;Inner Mongolia Shengtian Organic Fertilizer Limited Liability Company,Inner Mongolia Ordos 017000,China)
出处
《土壤通报》
CAS
北大核心
2018年第4期949-952,共4页
Chinese Journal of Soil Science
基金
内蒙古自然科学基金项目(2015MS0309)资助
关键词
土壤调理剂
沙土
保水性
养分
容重
〉0.25
mm团聚体
Soil conditioner
Sandy soil
Water retention
Nutrient content
Bulk density
〉 0.25 mm aggregate
