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首页> 外文期刊>American-Eurasian Journal of Agricultural and Environmental Sciences >Improving Millet-Cowpea Productivity and Soil Fertility with Crop Rotation, Row Arrangement and Cowpea Density in the Sahel, West Africa
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Improving Millet-Cowpea Productivity and Soil Fertility with Crop Rotation, Row Arrangement and Cowpea Density in the Sahel, West Africa

机译：通过西非萨赫勒地区的作物轮作，行距安排和Cow豆密度提高小米-小豌豆的生产力和土壤肥力

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摘要

We intercropped cowpea (Vigna unguiculata line TN256-87) at three densities (low, 5882-6275 stands ha~(-1); medium, 10 558-11 503 ha~(-1); and high, 29 412-32 418 ha~(-1)) with a local cultivar of millet (Pennisetum glaucum 'Hini Kirey') at low density (5882-6275 ha~(-1)) in one of two row arrangements (1:1 and 4:4 millet to cowpea) under rainfed conditions on sandy soil for 3 years in western Niger. It was also tested crop rotation between years. Crop rotation increased total biomass by 21%, milletbiomass by 24% and millet grain yield by 38%. The 4:4 row arrangement increased cowpea biomass by 25% and the highest crop density increased it by 132%. N input and N uptake by cowpea plants tended to be higher under crop rotation. Total soil N and organic C in the surface 15 cm of soil were increased under crop rotation. It could be concluded that the 4:4 row arrangement and crop rotation would improve yields for farmers in the Sahel who must cope with poor soil fertility on insufficient land and who cannot afford to buy enough mineral fertilizer.
机译：我们以三种密度套种cow豆（Vigna unguiculata系TN256-87）（低密度为5882-6275标准公顷〜（-1）;中等密度为10558-11503公顷〜（-1）;高密度为29 412-32 418） ha〜（-1））和低密度（5882-6275 ha〜（-1））小米（Pennisetum glaucum'Hini Kirey'）的本地品种，以两行排列（1：1和4：4小米）之一在尼日尔西部的沙质土壤上，在雨水条件下持续3年。还测试了多年之间的轮作。轮作使总生物量增加了21％，小米生物量增加了24％，小米谷物产量增加了38％。 4：4行排列使cow豆生物量增加了25％，最高的作物密度使cow豆生物量增加了132％。在轮作下，cow豆植物的氮素输入和氮素吸收趋向于更高。作物轮作后，土壤15 cm表层的土壤总氮和有机碳增加。可以得出这样的结论：4：4行距排列和轮作将提高萨赫勒地区农民的单产，因为他们必须在土地不足的情况下应对土壤肥力差且无力购买足够的矿物肥料的情况。

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