棉粕腐植酸肥对土壤团聚体、酶及养分的影响

发布时间：2018-03-23 05:01

本文选题：腐植酸肥料　切入点：小麦　出处：《干旱地区农业研究》2017年04期 　论文类型：期刊论文

【摘要】：采用田间试验方法,以小麦新春38号作为供试品种,设置3个处理:空白对照、等养分复合肥和等养分棉粕腐植酸复合肥,研究了棉粕开发的腐植酸水溶性肥料对土壤团聚体、酶和养分的影响。结果表明:与不施肥处理相比较,腐植酸肥处理使土壤团聚体含量向2~0.25 mm和2 mm粒级有显著转移;土壤脲酶活性、过氧化氢酶和碱性磷酸酶活性显著提高,对蔗糖酶活性差异不明显;可显著提高碱解氮、速效钾和有效磷含量,腐植酸肥处理能平均提高全生育期0~20 cm土层碱解氮37.27%、速效磷42.24%、速效钾37.02%,20~40 cm土层碱解氮提高15.55%、速效磷提高61.52%、速效钾提高57.36%。与等养分复合肥处理相比,腐植酸肥处理使不同土层土壤团聚体百分含量向2~0.25 mm和2 mm粒级均有转移;前期抑制土壤脲酶活性,后期提高壤脲酶活性,提高过氧化氢酶和碱性磷酸酶活性,蔗糖酶活性差异不明显;可提高土壤中碱解氮含量,显著提高速效钾和速效磷含量,腐植酸肥处理可平均提高全生育期0~20 cm土层碱解氮5.92%、速效磷8.8%、速效钾4.29%,20~40 cm土层碱解氮提高1.9%、速效磷提高15.39%、速效钾提高8%。
[Abstract]:Using wheat Xinchun 38 as the tested variety, three treatments were set up in the field trial: blank control, equal nutrient compound fertilizer and equal nutrient cotton meal humic acid compound fertilizer. The effect of water-soluble humic acid fertilizer developed by cottonseed meal on soil aggregate was studied. The results showed that humic acid fertilizer treatment could significantly transfer soil aggregate content to 20.25mm and 2mm grain size, and soil urease activity, catalase activity and alkaline phosphatase activity increased significantly. There was no significant difference in sucrase activity and the contents of alkali-hydrolyzed nitrogen, available potassium and available phosphorus were significantly increased. Humic acid fertilizer treatment could increase the alkali-hydrolyzed nitrogen (N), available phosphorus (P), available potassium (K), available potassium (K), alkali-hydrolyzed nitrogen, available phosphorus and potassium in 0 ~ 20 cm soil layer, 42.24 cm soil layer, 15.55 cm soil layer, 61.52 2 cm soil layer, 57.36 cm soil layer, respectively. Humic acid fertilizer treatment could transfer the percentage content of soil aggregates to 20.25mm and 2mm grains in different soil layers, inhibit soil urease activity in early stage, increase soil urease activity, increase catalase and alkaline phosphatase activity in later stage, increase soil urease activity, increase soil urease activity, increase catalase and alkaline phosphatase activity in different soil layers. Sucrase activity had no significant difference, but could increase the content of alkali-hydrolyzed nitrogen, available potassium and available phosphorus in soil. Humic acid fertilizer treatment could increase alkali-hydrolyzed nitrogen 5.92, available phosphorus 8.8m, alkali-hydrolyzed nitrogen 1.9m, available phosphorus 15.39m, available potassium 8.8cm, available potassium 4.29m 2040cm soil layer, and available phosphorus 15.39m.
【作者单位】：石河子大学农学院;
【基金】：国家自然科学基金(31560169) 国家科技支撑计划项目(2014BAC14B030-2) 国际科技合作项目(2015DFA11660)
【分类号】：S141

【相似文献】