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首页> 外文期刊>Crop management >Corn (Zea mays) Emergence andEarly Growth as Influenced by Tansymustard(Descurainia pinnata) Residue
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Corn (Zea mays) Emergence andEarly Growth as Influenced by Tansymustard(Descurainia pinnata) Residue

机译：丹参（Descurainia pinnata）残留影响玉米（Zea mays）的出现和早期生长

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摘要

Farmers have observed reduced early growth of corn in the presence of tansymustard [Descurainia pinnata (Walt.) Britt.], a winter annual weed of the Brassicaceae family. A greenhouse study was conducted to evaluate the effect of tansymustard on corn (Zea mays L.) emergence and early growth. Treatments included corn growing in pots with only tansymustard root residue, with only tansymustard shoot residue, and with whole tansymustard plant residue (roots plus shoots); tansymustard plants treated with glyphosate 2 days after planting (DAP) corn seeds; and a control (no tansymustard residue). Corn emergence was recorded and biomass measured after 4 weeks of growth. Time to 50% corn emergence was delayed by 1 to 2 days when tansymustard plants were treated with glyphosate. The number of emerged corn plants per pot, total corn biomass per pot, and corn height were not influenced by the presence of tansymustard residue, leading to the conclusion that relatively low quantities of tansymustard residue had no effect on corn growth in this study. The stunted corn development observed by farmers in the field may be due to competition rather than allelopathy, since tansymustard is often controlled several days after crop emergence.
机译：农民观察到，在十字花科[Brucesaceae家族的冬季一年生杂草] tansymustard [Descurainia pinnata（Walt。）Britt。]的存在下，玉米的早期生长减少。进行了一项温室研究，以评估丹参芥对玉米（Zea mays L.）出苗和早期生长的影响。处理方法包括在罐中种植玉米，其中只有丹磺草根的残留物，只有丹磺草的芽的残渣和整个丹磺草的植物残渣（根加芽）;种植（DAP）玉米种子后2天用草甘膦处理过的坦氏芥末植物;和一个对照（没有坦西米德残渣）。生长4周后记录玉米出苗并测量生物量。用草甘膦处理丹磺草植物后，玉米出苗率达到50％的时间延迟了1-2天。 tansymustard残留物的存在不影响每盆出苗的玉米植株的数量，每盆的玉米总生物量和玉米高度，从而得出结论：在该研究中，相对少量的tansymustard残留物对玉米生长没有影响。田间农民观察到的玉米发育迟缓可能是由于竞争而不是因化感所致，因为鞣花常在出苗后几天被控制。

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