增施生物有机肥对盐碱土壤养分的影响 - 吉林农业大学学报.PDF

吉林农业大学学报 2013，01 Journal of Jilin Agricultural University E-mail:jlndxb@ 增施生物有机肥对盐碱土壤养分的影响∗ 于秀丽 白城师范学院地理科学学院，白城 137000 摘 要：以吉林省西部盐碱土为试验对象，通过田间试验研究了不同用量的生物有机肥对土壤有机质、养分含量和 pH 的影响。结果表明：生物有机肥能有效降低土壤pH 值。施入生物有机肥后，从 6 月到 9 月，盐碱地土壤有机质、 全氮、有效钾和土壤 pH 均呈先下降后上升的趋势，7 月份达最低值；土壤有效磷含量表现为逐渐降低的规律。与对 照组土壤相比，生物有机肥的 3 个处理均能显著降低土壤 pH ，提高土壤有机质、全氮、有效钾和有效磷含量，且随 着生物有机肥施用量的增多，其变化幅度逐渐增大。 关键词：生物有机肥；盐碱土；施肥；土壤养分 中图分类号：S156.44 文献标识码：A 文章编号：1000-5684(2013) 网络出版地址： Effect of Bio-organic Fertilizer Application on Nutrients in Saline-alkaline Soil YU Xiu-li College of Geographical Science, Baicheng Normal College, Baicheng 137000, China Abstract: Field experiments were carried out in Western Jilin to study the effect of different amount of bio-organic fertilizer application on organic matter content, nutrient content and pH value in saline-alkaline soil. Results showed that soil pH value was efficiently decreased with bio-organic fertilizer treatment. The detected values on soil properties of organic matter content, total nitrogen content, available potassium content and pH value, which reached the minimum during July, decreased early and then increased late from June to September. In the saline-alkaline soil of the three experimental groups treated with biological organic fertilizer, soil pH value was significantly lower and the values of content of organic matter, total nitrogen, available phosphorus and available potassium were higher than those of the control group. The change range of these detected values on soil properties increased gradually with the increase of adding amount of bio-organic fertilizer application. Key words: bio-organic fertilizer; saline-alkaline soil; fertilizer application; soil nutrient 自 2005 年第一届国际盐渍化论坛召开至今，土 明生物有机肥可以显著增加土壤中有机质含量