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首页> 外文期刊>Plant and Soil >Establishment of Bradyrhizobium japonicum for soybean by inoculation of apreceding wheat crop
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Establishment of Bradyrhizobium japonicum for soybean by inoculation of apreceding wheat crop

机译:小麦前期接种对大豆根瘤菌的建立。

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On fields with no history of soybean (Glycine max (L.) Merr.) production, inoculation alone is often inadequate to provide for adequate nodulation the first time this crop is grown. The objective of this study was to determine if inoculation of spring wheat (Triticum aestivum L.) seed with Bradyrhizobium japonicum would lead to an increase of B. japonicum numbers in the soil, and improve nodulation of a subsequent soybean crop. In the greenhouse, wheat seed inoculation increased B. japonicum numbers from undetectable numbers to > 9000 g(-1) of soil, whereas the numbers of introduced B. japonicum declined in unseeded pots. In the field, inoculation of wheat seed increased B. japonicum numbers in the soil from undetectable levels to > 4000 g(-1) the following year. When soybean seed was inoculated, but grown in soil devoid of B. japonicum, nodules formed only near the point of seed placement. The heaviest nodulation, and widest distribution of nodules in the topsoil were found whenB. japonicum was established the year before by wheat seed inoculation, plus soybean seed inoculation. Wheat seed inoculation the year before growing soybean, combined with proper soybean seed inoculation, should provide for abundant nodulation the first time soybean is grown on a field.
机译:在没有大豆生产史的田地上,单独接种通常不足以在首次种植该作物时提供足够的结瘤。这项研究的目的是确定用日本根瘤菌接种春小麦(Triticum aestivum L.)种子是否会导致土壤中日本根瘤菌数量的增加,并改善随后大豆作物的根瘤病。在温室中,接种小麦种子会使日本菜的数量从无法检测的数量增加到土壤的9000 g(-1)以上,而在没有播种的花盆中,日本菜的数量下降了。在田间,接种小麦种子会使次年日本土壤中的日本血吸虫数量从无法检测的水平增加到> 4000 g(-1)。当接种大豆种子,但在没有日本芽孢杆菌的土壤中生长时,结节仅在种子放置点附近形成。当B时,发现表土中的结节最重,结节分布最广。日本小麦是在前一年通过小麦种子接种加上大豆种子接种而建立的。在大豆播种前一年接种小麦种子,再加上适当的大豆种子接种,应在首次田间种植大豆时提供充足的结瘤。

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