添加蛭石堆肥可改善土壤团聚体稳定性、酶活性和土壤可用养分

IF 3.4 3区 农林科学 Q2 ENVIRONMENTAL SCIENCES
Zhuo Yang, Yuxin Luo, Huan Chen, Ying Zhang, Shiyun Wu, Ming Yang, Jingjing Jia, Chunliang Zhou, Yumei Zhou
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引用次数: 0

摘要

蛭石堆肥是一种环保、有效的有机肥料,已被广泛用于改善土壤质量,并有不同的添加剂量。然而,关于蛭石堆肥的大小可能对土壤孔隙度和养分释放产生的潜在影响却很少有人研究。为了提高土壤肥力,在贫瘠土壤中添加了两种规格(0-2 毫米和 3-5 毫米)和四种体积比例(5%、10%、20% 和 30%)的蛭石堆肥,并以未经改良的土壤作为对照(CT)。本研究测量的几乎所有物理参数、养分、团聚体和土壤酶活性都受到蛭石堆肥添加量的积极影响,并且与添加比例和蛭石堆肥大小有显著关系。总体而言,添加蛭石堆肥降低了土壤 pH 值和容重,同时提高了导电率和孔隙度。与 CT 相比,S8(30% 比例,3-5 毫米粒径)的平均重量直径(MWD)和几何平均直径(GMD)分别增加了 15.2% 和 9.1%,S4(30% 比例,0-2 毫米粒径)的水稳骨料(WSA0.25)增加了 27.7%。大粒径组的 MWD 和 GMD 平均比小粒径组高 19.7% 和 19.4%。S4 和 S8 的脲酶、糖酶、脱氢酶和谷氨酸脱羧酶的活性分别是 CT 的 3.3 倍和 2.1 倍、2.9 倍和 4.9 倍、50.7% 和 69.5%、72.1% 和 72.7%。添加蛭石堆肥提高了有机质、可利用氮、磷和钾的含量,其中 S4 和 S8 的提高幅度最大(1.2 至 4.9 倍),这与团聚体和酶活性的提高有关。施用蛭石堆肥对土壤改良有积极影响,其添加比例比蛭石堆肥的大小更显著。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Vermicompost Addition Improved Soil Aggregate Stability, Enzyme Activity, and Soil Available Nutrients

Vermicompost Addition Improved Soil Aggregate Stability, Enzyme Activity, and Soil Available Nutrients

Vermicompost is an environment-friendly and effective organic fertilizer, and has been widely used to improve soil quality with different addition doses. However, the potential effects of vermicompost size that may affect soil porosity and nutrient release are rarely studied. Two sizes (0–2 mm and 3–5 mm) and four volume proportions (5%, 10%, 20%, and 30%) of vermicompost were added in the poor soil to improve soil fertility with the originally unimproved soil as the control (CT). Almost all physical parameters, nutrients, aggregates, and soil enzyme activity measured in this study were positively affected by vermicompost addition, and significantly related to addition proportion and vermicompost size. Overall, vermicompost addition decreased soil pH and bulk density, while increased electrical conductivity and porosity. The mean weight diameter (MWD) and geometric mean diameter (GMD) in the S8 (30% proportion, 3–5 mm size) were 15.2% and 9.1% higher, and the water stable aggregate (WSA0.25) in the S4 (30% proportion, 0–2 mm size) was 27.7% higher than the CT. On average, the MWD and GMD in the bigger size group were 19.7% and 19.4% higher than those in the smaller size group. The activities of urease, saccharase, dehydrogenase, and glutamate decarboxylase in the S4 and S8 were 3.3 and 2.1 times, 2.9 and 4.9 times, 50.7% and 69.5%, 72.1% and 72.7% higher than the CT. Vermicompost addition increased the content of organic matter, available nitrogen, phosphorus, and potassium with the biggest enhancement in the S4 and S8 (ranging from 1.2 to 4.9 times), which was related to the increase in aggregates and enzyme activity. Vermicompost application had positive effects on soil improvement with addition proportion being more significant than vermicompost size.

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来源期刊
Journal of Soil Science and Plant Nutrition
Journal of Soil Science and Plant Nutrition Agricultural and Biological Sciences-Soil Science
CiteScore
5.90
自引率
10.30%
发文量
331
审稿时长
9 months
期刊介绍: The Journal of Soil Science and Plant Nutrition is an international, peer reviewed journal devoted to publishing original research findings in the areas of soil science, plant nutrition, agriculture and environmental science. Soil sciences submissions may cover physics, chemistry, biology, microbiology, mineralogy, ecology, pedology, soil classification and amelioration. Plant nutrition and agriculture submissions may include plant production, physiology and metabolism of plants, plant ecology, diversity and sustainability of agricultural systems, organic and inorganic fertilization in relation to their impact on yields, quality of plants and ecological systems, and agroecosystems studies. Submissions covering soil degradation, environmental pollution, nature conservation, and environmental protection are also welcome. The journal considers for publication original research articles, technical notes, short communication, and reviews (both voluntary and by invitation), and letters to the editor.
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