| 摘要: |
| 为改良滨海盐碱地土壤性状,保证作物良好生长发育,拟通过调控土壤的化学性状(添加腐植酸)、土壤的生物学性状(添加蚯蚓粪、蚯蚓蛋白菌肥)进行盐碱地的改良,采用盆栽试验方法,以玉米为试验材料,做了相关研究。结果表明添加腐植酸、或蚯蚓粪、或菌肥3种物料相对于单施化学肥料都能不同程度地增加玉米幼苗地上部和地下部的生物量及对养分的吸收量,但降低了土壤脲酶和碱性磷酸酶活性;添加腐植酸或蚯蚓粪2个处理的玉米地下部生物量都与单施化学肥料处理分别增加了24.2%和18.2%(P<0.05);添加菌肥处理可增加土壤速效养分含量,使碱化度和pH分别下降了9.5%和1.1%(P<0.05);添加蚯蚓粪处理使土壤CEC含量增加了3.2%,且能降低土壤中全盐含量;添加腐植酸使有机质提高了4.3%,并降低pH(P<0.05);添加菌肥或蚯蚓粪处理可显著增加土壤中的微生物量碳和微生物量氮的含量(P<0.05);添加腐植酸、或蚯蚓粪、或菌肥处理的土壤脲酶和碱性磷酸酶活性都低于单施化学肥料处理。因此,在滨海盐碱地上施用化学肥料添加腐植酸、或蚯蚓粪、或菌肥能够改善土壤的性状,促进作物的生长。 |
| 关键词: 盐碱地改良 物料 玉米 土壤性状 |
| DOI：10.11841/j.issn.1007-4333.2015.05.12 |
| 投稿时间：2015-01-04 |
| 基金项目:国家自然基金项目(31172037);国家"十二五"支撑项目(2013BAD05B03);国家"十二五"支撑项目(2014BAK19B05) |
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| Improved effect of humic acid, earthworm protein fertilizer and vermicompost on coastal saline soils |
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WANG Fu-you1, WANG Chong1, LIU Quan-qing2, JIN Shu-jie1, XIE Yong-Jin1
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| (1.College of Resources and Environmental Sciences/Key Laboratory of Biodiversity and Organic Agricultural, China Agricultural University, Beijing 100193, China;2.Agricultural Resources Environmental Research Institute, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China) |
| Abstract: |
| In order to improve saline-alkali soil properties and ensure crop growth and development a pot experiment was conducted by using maize as the materials.This study aims to improving saline land by regulating chemical properties with additonal humic acid and applying biological characteristics including vermicompost and earthworm protein fertilizer in soil,The results showed that:Compared to the application of chemical fertilizers,three treatments in this experiment were respectively and differentially improved the absorption of nutrients and the biomass of maize seedlings in both aboveground and underground level.All three treatments showed lower activity of soil urease and alkaline phosphatase in the compound soil.The biomass of maize in the underground level was increased by 24.2% in soil added with humic acid and 18.2% in soil applied with vermicompost (P<0.05).Alkaline and pH were dropped by 9.5%,1.1% (P<0.05) respectively.Adding earthworm protein fertilizer into soil swelled the content of soil available nutrient;the content of soil CEC in the vermicompost-treated soil slightly increased by 3.2% with a decreasing trend of the total salt;the organic matters were increased by 4.3%.pH was decreased (P<0.05) by adding humic acid to the soil.The content of soil microbial biomass carbon and microbial biomass nitrogen (P<0.05) significantly increased by adding protein fertilizer or vermicompost.Hence,this study demonstrates that adding humic acid,vermicompost and earthworm protein fertilizer into saline-alkali soil could improve saline soil traits and have positive influence on the growth of crops. |
| Key words: saline-alkali soil improvement materials maize soil properties |
