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首页> 外文期刊>European Journal of Agronomy >Effect of depth of fertilizer banded-placement on growth, nutrient uptake and yield of oilseed rape (Brassica napus L.)
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Effect of depth of fertilizer banded-placement on growth, nutrient uptake and yield of oilseed rape (Brassica napus L.)

机译：施肥深度对油菜生长，养分吸收和产量的影响

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摘要

A better understanding of crop growth and nutrient uptake responses to the depth of fertilizer banded-placement in the soil is needed if growth and nutrient uptake responses are to be maximized. A two-year field study covering two rape seasons (2010-2011 and 2011-2012) was conducted to examine the effect of banded-placement of N-P-K fertilizer at various depths on growth, nutrient uptake and yield of oilseed rape (Brassica napus L.). The results showed that fertilization at 10 cm and 15 cm soil depth produced greater taproot length and dry weight than fertilization at 0 cm and 5 cm. 0 cm and 5 cm deep fertilization significantly increased the lateral root distribution at 0-5 cm soil depth, while 10 cm and 15 cm deep fertilization induced more lateral root proliferation at 5-15 cm soil depth. At 36 days after sowing (DAS), 5 cm deep fertilization produced better aboveground growth and nutrient uptake than 10 cm and 15 cm deep fertilization. However, reversed results were observed after 36 DAS. 10 cm and 15 cm deep fertilization produced more rapeseed than 0 cm and 5 cm deep fertilization, moreover, the yield difference was more significant in drought season (2010-2011) than in relatively normal season (2011-2012). In summary, these results preliminarily suggest that both 10 cm and 15 cm are relatively proper fertilizer placement depth when the practice of banding fertilizer is used in oilseed rape production. But from the viewpoint of diminishing the production cost, 10 cm deep fertilization should be recommended in actual farming. Because 15 cm deep fertilization may require higher mechanical power input, and thus resulting in higher cost of production. (C) 2014 Elsevier B.V. All rights reserved.
机译：如果要使生长和养分吸收的响应最大化，就需要更好地了解作物生长和养分吸收对土壤中肥料分层的深度的影响。进行了为期两年的田间研究，涵盖两个油菜季节（2010-2011年和2011-2012年），以调查氮磷钾肥在不同深度条带化放置对油菜（油菜）的生长，养分吸收和产量的影响。 ）。结果表明，在10 cm和15 cm的土壤深度施肥比在0 cm和5 cm的施肥产生更大的主根长度和干重。 0 cm和5 cm深施肥在0-5 cm土壤深度显着增加了侧根的分布，而10 cm和15 cm深施肥在5-15 cm土壤深度诱导了更多的侧根增殖。播种（DAS）后第36天，深10 cm的施肥比深10 cm和15 cm的施肥产生更好的地上生长和养分吸收。但是，在36个DAS之后观察到相反的结果。 10 cm和15 cm深施肥比0 cm和5 cm深施肥的油菜籽更多，此外，干旱季节（2010-2011）的产量差异比相对正常季节（2011-2012）的产量差异更大。总之，这些结果初步表明，在油菜生产中使用捆扎肥料的做法，10 cm和15 cm都是相对合适的肥料放置深度。但是从降低生产成本的角度出发，在实际耕作中应建议施肥10 cm深。由于15 cm深的施肥可能需要更高的机械动力输入，因此导致更高的生产成本。 （C）2014 Elsevier B.V.保留所有权利。

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