R. Molas, H. Borkowska, D. Skiba, B. Sawicka, Ewa Skulimowska
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引用次数: 0
摘要
2016-2018年,在沙质和沙质壤土的随机地块系统中,对雌雄同体的西达(Sida hermaphrodita L. Rusby,维吉尼亚扇花瓣)进行了实验。每年测定地上干质量和根系干质量的产量。在播种前和研究结束后,测定了土壤中土质组分的组成。测定了思达茎、根中碳的百分含量,计算了碳的质量。在沙质土壤中种植西达时,栽培第三年(2018年)的平均干质量产量(茎和根)略高于13 t∙ha−1,在沙质壤土中高出3倍(36 t∙ha−1)。种植第3年时,茎和根的固碳量分别超过5 t∙ha−1(沙土)和15 t∙ha−1(砂壤土)。茎碳含量为46.25%,根碳含量为42.67%。结果采用方差分析进行统计处理。结果表明:四达的栽培使沙土中砂粒含量减少了百分之一,可浮性(细)粒含量增加,腐殖质含量增加;砂壤土则相反。
The Sustainable Future of Carbon Farming with Virginia Fanpetals, a Carbon-Negative Species
In 2016–2018, an experiment with Sida hermaphrodita L. Rusby (Virginia fanpetals) called Sida was conducted in the system of random blocks on sandy and sandy loam soil. Each year, the yields of dry aboveground mass and dried mass of roots were determined. Before sowing Sida and after the end of the research, the composition of earthy fractions in the soils was determined. In the stalks and roots of Sida, the percentage content was determined, and the mass of carbon was calculated. When Sida was grown in sandy soil, the average dry mass yield (stalks and roots) in the third year of cultivation (2018), was slightly above 13 t∙ha−1, and in the sandy loam soil it was three times higher (36 t∙ha−1). In the third year of cultivation, the carbon sequestration in the stems and roots exceeded 5 t∙ha−1 (sandy soil), and 15 t∙ha−1 (sandy loam). The carbon content in the stems was 46.25%, and in the roots–42.67%. The results were statistically processed using ANOVA. It was found that the cultivation of Sida caused a percent decrease in the sand fraction, an increase in the floatable (fine) fraction in sandy soil, and an increase in humus content; the opposite changes were noted in the sandy-loam soil.