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首页> 外文期刊>Forage and grazinglands >How Winter Annual Forage Legumes Persist In Diverse Soil Moisture Environments of a Semi-arid Region
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How Winter Annual Forage Legumes Persist In Diverse Soil Moisture Environments of a Semi-arid Region

机译：半干旱地区不同土壤水分环境下冬季一年生牧草豆科植物的生存

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摘要

Varied microenvironments complicate use of legumes in marginal lands. Seven annual cool-season legume species, sown for natural reseeding, were rated for bloom and germination dates, fall vigor, and spring percentage stand at Tucumcari, NM. Soil moisture effects were: furrow-irrigated once to promote germination, irrigated monthly April to October, irrigated monthly year-round, and poorly drained, saline/sodic soil. The study was a strip-split-split-split plot over four years having four replicationsnested within each soil moisture strip plot. Trifolium nigrescens did not establish in any soil moisture situation. Only T. alexandrinum established > 20% stand in poorly drained soil; however, neither it nor T. vesiculosum naturalized in any strip plot. Naturalized stand percentage declined differently across years for species and soil moisture treatments. T. incarnatum reseeding failed in 1999; the others, except T. vesiculosum and T. alexandrinum, reseeded throughout the test, Vicia sativa being most consistent across soil moisture treatments, but at lower levels of stand establishment than other species. T. alexandrinum might serve for annually replanted cover in poorly drained, saline/sodic soils. T. hirtum and V. villosa also might be useful.
机译：多样的微环境使边缘地区豆类的使用复杂化。在新墨西哥州的图克姆卡里，对7种每年用于自然播种的冷季豆类进行了开花和发芽日期，秋季活力和春季百分率的评定。土壤湿度的影响是：犁沟灌溉一次以促进发芽，4月至10月每月灌溉一次，全年整月灌溉，盐水/钠盐土壤排水不畅。该研究是四年来的条带-分割-分割-分割图，每个土壤水分带状图内嵌套有四个重复。黑麦草在任何土壤水分情况下都没有建立。在排水不畅的土壤中，只有建立的亚历山大草（T. alexandrinum）> 20％。然而，它和泡桐都没有在任何地块上自然化。物种和土壤水分处理的归化林分百分比多年来不同程度地下降。 T. incarnatum播种于1999年失败;在整个试验过程中，除T. vesiculosum和T. alexandrinum外，其他种子均重新播种，在整个土壤水分处理中，豌豆（Vicia sativa）最为稳定，但与其他物种相比其立木水平较低。亚历山大草（T. alexandrinum）可能每年在排水不畅的盐碱/钠盐土壤中重新种植。 T. hirtum和V. villosa也可能有用。

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