牛粪和木生物炭及绿肥对热带稀树草原土壤肥力和非洲冰草（Cyperus esculentus L.）生长的影响。

Effects of cow dung and wood biochars and green manure on soil fertility and tiger nut (Cyperus esculentus L.) performance on a savanna Alfisol.

机构信息

College of Agricultural Sciences, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria.

Department of Food Science and Nutrition, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria.

出版信息

Sci Rep. 2020 Dec 3;10(1):21021. doi: 10.1038/s41598-020-78194-5.

DOI:10.1038/s41598-020-78194-5

PMID:33273637

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7713349/

Abstract

Two field experiments were conducted concurrently in 2019. The study investigated the effects of single and combined application of wood biochar (WB) and cow dung biochar (CDB) with green manure (GM) on soil properties, performance, and tuber qualities of tiger nut. The treatments consisted of: CDB at 10 t ha, WB at 10 t ha, GM-Tithonia diversifolia at 10 t ha, CDB + GM, WB + GM, control. The six treatments were arranged in RCBD with three replications. CDB, WB, and GM either sole or combined increased moisture content, SOC, nutrient contents, culturable microorganisms, performance, moisture, ash, fiber, and protein contents of the tiger nut compared with the control. CDB has a higher N, C: N ratio, P, K, Ca, Mg, CEC, and pH relative to. CDB alone and CDB + GM increased growth and yield compared with WB alone and WB + GM. CDB + GM has the highest value of growth and yield of tiger nut. GM alone improved growth and yield of tiger nut compared with the two sole biochar treatments. CDB + GM and WB + GM increased growth and yield of tiger nut compared with their sole forms. This was adduced to biochar allowing the retention of nutrients from rapidly decomposing Tithonia within the rooting zone, thereby promoting better effectiveness of nutrient uptake and increase in yield. Therefore, for good soil fertility and tiger nut yield, it is important that the addition of a fast releasing nutrient source to biochar be sought.

摘要

2019 年进行了两项田间试验。本研究探讨了单独和联合施用木生物炭（WB）和牛粪生物炭（CDB）与绿肥（GM）对油莎豆土壤性质、性能和块茎品质的影响。处理包括：CDB 10 t/ha、WB 10 t/ha、GM-Tithonia diversifolia 10 t/ha、CDB+GM、WB+GM、对照。这 6 种处理采用完全随机区组设计（RCBD），重复 3 次。与对照相比，CDB、WB 和 GM 单独或联合施用均能提高土壤水分含量、SOC、养分含量、可培养微生物、油莎豆的性能、水分、灰分、纤维和蛋白质含量。与 WB 相比，CDB 具有更高的 N、C:N 比、P、K、Ca、Mg、CEC 和 pH。与 WB 单独和 WB+GM 相比，CDB 单独和 CDB+GM 增加了油莎豆的生长和产量。CDB+GM 具有最高的油莎豆生长和产量。与两种单独的生物炭处理相比，GM 单独提高了油莎豆的生长和产量。与单独施用生物炭相比，CDB+GM 和 WB+GM 提高了油莎豆的生长和产量。这是因为生物炭允许从快速分解的 Tithonia 中保留养分在根区，从而促进更好的养分吸收效果和产量增加。因此，为了获得良好的土壤肥力和油莎豆产量，重要的是要寻求向生物炭中添加快速释放养分源。