不同施肥处理对采煤塌陷区土壤养分及酶活性的影响
2018-11-02陈芬余高谭杰斌张铁全
陈芬 余高 谭杰斌 张铁全
摘 要:通过研究不同施肥处理对采煤塌陷区土壤养分和酶活性的影响,结果表明:采煤塌陷区复垦1年后,不同施肥处理对土壤中的养分含量影响大小顺序:无机肥+有机肥+菌肥>无机肥+有机肥>无机肥>CK;土壤碱性磷酸酶和脲酶活性从高到低的顺序为:无机肥+有机肥+菌肥>无机肥+有机肥>无机肥>CK;土壤碱性磷酸酶和脲酶活性的季节变化规律为,夏季土壤酶活性最高,而冬季土壤酶活性最低。
关键词:施肥处理;土壤养分;碱性磷酸酶活性;脲酶活性
中图分类号 S157.2 文献标识码 A 文章编号 1007-7731(2018)14-0088-03
Effects of Different Fertilization Treatmentson Soil Nutrientandenzyme Activity in the Coal Mine Region
Chen Fen1 et al.
(1Wujiang College,Tongren University,Tongren 554300,China)
Abstract:The study was conducted to determine the effects of different fertilization treatments on soil nutrient and enzyme activity in coal mining subsidence areas. The results showed that the trend of nutrient content followed the order:inorganic fertilizer+organic+microbial fertilizer>inorganic fertilizer+organic>inorganic fertilizer>CKin soil after one year of reclamation in coal mining subsidence area. The soil alkaline phosphatase and urease activity from high to low followed the order:inorganic fertilizer+organic+microbial fertilizer>inorganic fertilizer+organic>inorganic fertilizer>CK. The activity of alkaline phosphotase and urease presented significant seasonality,with the highest activity found during the summer and the lowest activity during the winter time period.
Key words:Fertilization treatment;Soil nutrient;Alkaline phosphataseactivity;Ureaseactivity
山西是我國的煤炭大省之一,含煤面积达62000km2,占全国已探明储量的1/3[1-2]。煤炭资源的大规模开采虽促进了经济和社会的发展,但与此同时也带来了严重的生态环境和地质灾害问题[3-5]。煤矿经过多年的开采,导致上覆岩层从下至上发生冒落、裂隙和弯曲下沉,使采空区上方地表发生大面积沉陷,破坏了原有的土壤结构和层次,改变土壤理化性质,微生物多样性锐减,降低土壤肥力下,进而使耕地地力下降[3,6]。因此,改良采煤塌陷区土壤并提高土壤肥力是矿区生态恢复的热点之一。为此,本试验通过研究不同施肥处理对复垦1年采煤塌陷区土壤的养分和不同季节土壤酶活性的影响,以期为加快采煤塌陷区土壤的培肥熟化提供一定的理论依据。
1 材料与方法
1.1 研究区概况 试验区位于山西省长治市襄垣县王桥镇西山底村采煤塌陷复垦区,地处东经113°00′56″和北纬36°27′16″,属潞安集团五阳煤矿井田范围。当地主要种植……
