EFFECT OF PLANTING DATE AND NITROGEN RATE ON YIELD AND QUALITY OF FORAGE CORN
EFFECT OF PLANTING DATE AND NITROGEN RATE ON YIELD AND QUALITY OF FORAGE CORN
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播种期和施氮量对饲用玉米产量和品质的影响
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
H. D. Gandomani
中科院分区：
文献类型：
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作者：
Hossein Zaker Esfahani;H. Aminpanah;H. D. Gandomani
研究了播期和施氮量对饲用玉米产量和品质的影响。CV. SC 704），2011年在伊朗伊斯法罕进行了一项实验。实验设计为析因设计，包含三个完全随机区组。因素为施氮量（0、50、100、150和200 kg ha-1）和种植日期（6月14日和6月25日）。结果表明，当施氮量从0增加到200 kg/ha时，鲜草产量和干草产量分别增加137%和115%。6月25日播种期的鲜草和干草产量显著高于6月14日播种期。无论种植日期，总地上N和P吸收响应线性氮水平。当施氮量从0增加到200 kg/hm ~ 2时，地上部总氮、磷吸收量分别增加4.4倍和6.1倍。延迟种植日期从6月14日至6月25日显着增加地上N和P的吸收，平均跨N率。根据试验结果，建议在2000年6月25日播种，每公顷施氮200 kg。
SUMMARY To study the effects of planting date and nitrogen rate on yield and quality of forage corn (Zea mays L. cv. SC704), an experiment was conducted in Isfahan, Iran, in 2011. Layout of the experiment was a factorial design with three randomized complete blocks. Factors were N rates (0, 50, 100, 150, and 200 kg ha -1 ) and planting dates (14 June and 25 June). Result showed that fresh and dry forage yields were significantly increased by 137% and 115%, respectively, as N rate increased from 0 to 200 kg ha -1 . Fresh and dry forage yields were significantly higher in planting date of 25 June compared with planting date of 14 June. Regardless of planting date, total aboveground N and P uptake responded linearly to nitrogen rates. Averaged across planting dates, total aboveground N and P uptake were significantly increased by 4.4 and 6.1 times when N fertilization increased from 0 to 200 kg ha -1 . A delay in planting date from 14 June to 25 June increased significantly aboveground N and P uptake as averaged across N rates. Based on the results of this experiment, application of 200 kg N ha -1 and planting date of 25 June are recommended for forage corn production in