埃塞俄比亚南部酸性土壤上生物炭、农家肥和石灰对土壤性质以及小麦生长和养分吸收的影响

IF 1.1 Q3 AGRONOMY

South African Journal of Plant and Soil Pub Date : 2022-03-15 DOI:10.1080/02571862.2022.2050316

Mekedes Lulu, Bekele Lemma, Legesse Hidoto, A. Melese

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引用次数: 1

摘要

本研究评估了生物炭（BC）、农家肥（FYM）和石灰相互作用对埃塞俄比亚南部土壤化学性质和不同小麦特性的影响。实验设计为三个重复的随机完全区块。该站点显著（p ≤ 0.05）对土壤和小麦属性的影响。生物炭显示出显著的效果（p ≤ 0.05）对土壤有机碳、阳离子交换能力和可交换钾（K）的影响显著（p ≤ 0.05）对可交换钙（Ca）和酸度的影响。农家肥（10吨ha−1）对土壤总氮（TN）有显著影响。生物炭和石灰对土壤pH值和有效磷（P）的影响很大，具体取决于场地。所有修正案均显示显著（p ≤ 0.001）对大多数小麦属性的影响，但BC的影响最大。生物炭产生了非常显著的（p ≤ 0.001）对株高、分蘖总数和生产分蘖数、每穗种子数、地上生物量、粮食产量以及小麦籽粒和秸秆中P和K含量的影响。我们认为BC对小麦属性的更大影响与其对土壤化学性质的影响有关。我们建议对BC单独或与FYM联合对酸性土壤类型的影响进行长期研究。

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Effect of biochar, farmyard manure, and lime on soil properties, and on growth and nutrient uptake of wheat on acidic soils in Southern Ethiopia

This study assessed the effect of the interactions of biochar (BC), farmyard manure (FYM) and lime on soil chemical properties, and on different wheat attributes in Southern Ethiopia. The experimental design was a randomised complete block in three replications. The site significantly (p ≤ 0.05) influenced soil and wheat attributes. Biochar showed a large significant effect (p ≤ 0.05) on soil organic carbon, cation exchange capacity, and exchangeable potassium (K) while lime showed a substantially significant (p ≤ 0.05) effect on exchangeable Calcium (Ca)and acidity. Farmyard manure (10 tonnes ha−1) had a significant effect on soil total nitrogen (TN). Biochar and lime showed a large significant effect on soil pH and available phosphorus (P) depending on the site. All amendments showed a significant (p ≤ 0.001) effect on most wheat attributes, but the highest effect was from BC. Biochar produced highly significant (p ≤ 0.001) effects on plant height, total number of tillers and productive tillers, number of seeds per spike, aboveground biomass, grain yield, and P and K content in wheat grain and straw. We accredited the greater effect of BC on wheat attributes to its influence on soil chemical properties. We recommend long-term studies on the impact of BC alone or in combination with FYM on acid soil types.

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来源期刊

South African Journal of Plant and Soil Agricultural and Biological Sciences-Plant Science

CiteScore

1.90

自引率

11.10%

发文量

期刊介绍： The Journal has a proud history of publishing quality papers in the fields of applied plant and soil sciences and has, since its inception, recorded a vast body of scientific information with particular reference to South Africa.