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首页> 外文会议>Africa-EU Rrenewable Energy Research and Innovation Symposium >Effect of biochar type and rate of application on maize yield indices and water use efficiency on an Ultisol in Ghana
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Effect of biochar type and rate of application on maize yield indices and water use efficiency on an Ultisol in Ghana

机译：生物炭类型的影响及其对加纳的Ultisol的玉米产量指标和水利用效率

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In an integrated approach to cut-down on inorganic fertilizer use by smallholder farmers for agricultural production through the use of biochar, a split-split plot experimental design with three replications was carried to determine the effect of biochar from three different feedstock (corn cob, rice straw and cocoa pod husk) applied at two different rates of the feedstock (2.5 t ha~(-1) and 5 t/ha) with three application rates of Nitrogen, Phosphorus and Potassium (N-P-K) as inorganic fertilizer (90-60-60, 45-30-30 and 0-0-0) on maize growth and yield as well as soil chemical properties. The main plots of the experimental design were allocated to the biochar types while the Sub-plot was allocated to the biochar rates. The Sub-sub-plot went for the inorganic fertilizer rates. The maize seeds were sown at spacing of 80 cm between rows and 40 cm between plants. Three seeds were sown per each stand which was later thinned to two plants two weeks after planting. Urea, Triple superphosphate and Muriate of Potash were used as the sources of inorganic nitrogen, phosphorus and potassium (N-P-K) respectively. The P and K were applied once two weeks after planting while the N was split applied. One third of the application rate of nitrogen was applied two weeks after planting and the remaining two thirds applied six weeks after planting. Soil samples were collected from 0-20 cm depth before planting (one composite sample from the experimental site) and at harvest (from each treatment plot) to evaluate the effect of the different amendments on different soil chemical properties notable N, P, K, CEC, and pH. The quantity of biochar application had pronounced effects on maize grain yields where higher application rates (5 t/ha) showed superior performance to 2.5 t/ha.
机译：在综合方法通过使用生物炭通过使用生物炭制备农业生产的无机肥料的综合方法，携带三种复制的分裂剧性实验设计，以确定生物炭的效果来自三种不同的原料（玉米棒，稻草和可可荚稻壳）以两种不同的原料速率（2.5 t ha〜（-1）和5t / ha）施用，具有三种氮，磷和钾（Npk）作为无机肥料（90-60 -60,45-30-30和0-0-0）对玉米生长和产量以及土壤化学性质。将实验设计的主图分配给生物炭类型，同时将子图分配给BioChOR速率。亚子图用于无机肥料率。玉米种子在植物之间的行和40厘米之间以80厘米的间隔播种。每个支架播种三个种子，后来两周后换两株植物。尿素，三重过磷酸盐和钾的杂物分别用作无机氮，磷和钾（N-P-K）的来源。在施加n次施用后两周施用p和k。在种植后两周施用氮施用率的三分之一，并且在种植后六周施用剩余的三分之二。在种植（来自实验部位的一个复合样品）之前从0-20cm深度收集土壤样品，并在收获（从每个治疗图中）来评估不同土壤化学性质的不同修正的效果N，P，K， CEC和pH。生物炭施用的数量显着对玉米谷物产生的影响，其中较高的施用速率（5吨/公顷）显示出优异的性能至2.5吨/公顷。

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