Effects of Sulfur Fertilization on Soybean Root and Leaf Traits, and Soil Microbial Activity
Effects of Sulfur Fertilization on Soybean Root and Leaf Traits, and Soil Microbial Activity
复制标题
施硫肥对大豆根叶性状及土壤微生物活性的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
F. Hu
中科院分区：
文献类型：
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作者：
Yanwen Zhao;X. Xiao;Dongmei Bi;F. Hu
摘要2004年和2005年采用盆栽试验研究了硫肥对大豆根、叶性状及土壤微生物活性的影响。本试验设3个处理：0 mg· kg-1（CK）、30 mg· kg-1（A）和60 mg· kg-1（B）。结果表明，施用元素硫能显著增加大豆侧根数8.6%~ 33.2%，干重6.6%~ 34.3%，根瘤数2.7%~ 35.9%，干重13.0%~ 75.7%，叶片叶绿素含量增加0.4 ~ 3.9个单位，大豆单株产量比对照增产7.3%~ 12.8%。施用单质硫还显著提高了同一生育期土壤微生物（细菌、真菌和放线菌）数量，以及过氧化氢酶、脲酶、中性磷酸酶和多酚氧化酶活性。上述结果表明，供硫能促进大豆生长，提高产量，增强土壤微生物活性。30 mg· kg-1的硫素用量是获得最高产量的适宜硫素用量。
ABSTRACT A pot experiment was implemented to study effects of sulfur (S) fertilization on soybean root and leaf traits and soil microbial activity in 2004 and 2005. In this experiment, three different treatments were established: 0 mg· kg− 1(CK), 30 mg· kg− 1(A), and 60 mg· kg− 1(B). The results showed that an application of elemental sulfur significantly increased the number of soybean side roots by 8.6% to 33.2% and dry weight by 6.6% to 34.3%, increased the root nodules number by 2.7% to 35.9%, and dry weight by 13.0% to 75.7%, increased chlorophyll content in leaves by 0.4 to 3.9 unit, and increased soybean yield per plant by 7.3% to 12.8%, compared with the control. The application of elemental sulfur also increased the amount of soil microorganism (bacterium, fungi and actinomycete), activity of catalase, urease, neutral phosphatase, and polyphenoloxidase in the same growth stage significantly. The above results showed sulfur supply could promote the growth of soybean, increase the yield, and enhance soil microbial activity. Thirty mg· kg− 1 was the suitable rate of sulfur for achieving the highest yield.