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首页> 外文期刊>Weed Technology >Effect of Glufosinate-Resistant Corn (Zea mays) Population and Row Spacing on Light Interception, Corn Yield, and Common Lambsquarters (Chenopodium album) Growth1
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Effect of Glufosinate-Resistant Corn (Zea mays) Population and Row Spacing on Light Interception, Corn Yield, and Common Lambsquarters (Chenopodium album) Growth1

机译：抗草铵膦玉米（Zea mays）种群和行距对光截距，玉米产量和普通羔羊（Chenopodium album）生长的影响 1

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摘要

Abstract:Management of corn (Zea mays) row spacings and populations has been used for many years to increase corn productivity. In 1998 and 1999, nonirrigated corn was grown in 38-, 56-, and 76-cm row spacings at populations averaging 59,300, 72,900, and 83,900 plants/ha in Michigan. Glufosinate at 0.29 kg/ha was applied to common lambsquarters (Chenopodium album L.) averaging 5 cm in height in each plot. Corn population and row spacing did not influence weed emergence following application of glufosinate. Common lambsquarters biomass and seed production were reduced when grown under canopies of corn planted in populations exceeding 72,900 plants/ha. Common lambsquarters biomass was reduced as corn row spacings were reduced from 76 to 38 cm. Early-season interception of photosynthetic active radiation (PAR) by corn canopies increased as row spacings decreased, but differences were not apparent later in the season. Interception of PAR was similar throughout the season when corn populations exceeded 72,900 plants/ha. Corn yields were not affected by row spacing, but they were increased with corn populations of 72,900 plants/ha or higher.
机译：【摘要】玉米（Zea mays）行距和种群的管理已被用于提高玉米生产力。在1998年和1999年，密歇根州非灌溉玉米的行距分别为38、56和76厘米，人口平均为59,300、72,900和83,900株植物/公顷。将0.29 kg / ha的草铵膦施用于普通羊羔（Chenopodium album L.），平均每块地高5 cm。施用草铵膦后，玉米种群和行距不影响杂草出苗。在人口超过72,900株/公顷的玉米冠层下种植时，普通羔羊的生物量和种子产量降低。随着玉米行距从76厘米减少到38厘米，普通羊羔的生物量减少了。随着行距的减小，玉米冠层对光合作用活性辐射（PAR）的早期截获量增加，但在季节后期，差异并不明显。整个季节，当玉米种群超过72,900株/公顷时，对PAR的截获相似。玉米单产不受行距的影响，但是随着玉米种群达到72,900株/公顷或更高，它们的产量会增加。

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