Study of Nitrogen Fertilization Management on Corn Yield and Nitrogen Use Efficiency in the Southern Caspian Sea Region

IF 0.9 4区农林科学 Q3 AGRONOMY

Romanian Agricultural Research Pub Date : 2022-01-01 DOI:10.59665/rar3935

Farzad Dehpouri, D. B. Tari, Y. Niknejad, H. F. Amoli, E. Amiri

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引用次数: 2

Abstract

Research was conducted at the Mazandaran Agricultural Research Center (Gharakhil) from 2016 to 2018 on the effect of nitrogen consumption time and amount on the yield and efficiency of nitrogen consumption in corn. A complete block design with four replications was used. Treatments include N1: no fertilizer application (control); N2: 60 kg ha-1 nitrogen fertilizer application in pre-plant; N3: 120 kg ha-1 nitrogen fertilizer application in pre-plant; N4: 180 kg ha-1 nitrogen fertilization in pre-plant; N5: 60 kg ha-1 nitrogen application in two stages [50% in pre-plant + 50% in R1(silking)]; N6: 120 kg ha-1 nitrogen fertilizer in two stages [50% in pre-plant + 50% in R1(silking)]; N7: 180 kg ha-1 nitrogen fertilization in two stages [50% in pre-plant + 50% in R1(silking)]; N8: 60 kg ha-1 nitrogen in three stages [33.33% pre-plant + 33.33% in R1 (silking) + 33.33% in R3 (milk)]; N9: 120 kg ha-1 nitrogen fertilizer in three stages [33.33% pre-plant + 33.33% in R1 (silking) + 33.33% in R3 (milk)]; N10: 180 kg ha-1 in three stages [33.33% pre-plant + 33.33% in R1 (silking) + 33.33% in R3 (milk)]. The agricultural activities were conducted according to regional customs. Based on the results, different levels and times of consumption affected the chlorophyll index yield and nitrogen use efficiency significantly. The highest grain yields were obtained by applying 120 kg ha-1 of nitrogen before planting, and the chlorophyll index was found to be positively related to grain yield.

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南里海地区氮肥管理对玉米产量及氮素利用效率的影响

2016 - 2018年，在Mazandaran农业研究中心(Gharakhil)开展了氮素消耗时间和用量对玉米产量和氮素消耗效率的影响研究。采用完整区组设计，共4个重复。处理包括N1:不施肥(对照);N2:植前施氮60 kg hm -1;N3:植前施氮肥120 kg hm -1;N4:种前施氮180 kg hm -1;N5:分两期施氮60 kg hm -1[孕前50% + R1 50%];N6:分两期施氮肥120 kg hm -1[孕前50% + R1(丝期)50%];N7:分两期施氮180 kg hm -1[孕前50% + R1 50%];N8: 3期60 kg hm -1氮肥[种前33.33% + R1(制丝)33.33% + R3(制乳)33.33%];N9:分三期施肥120 kg hm -1氮肥[种前33.33% + R1(制丝)33.33% + R3(制奶)33.33%];N10:分三期180 kg hm -1[种前33.33% + R1(产丝)33.33% + R3(产奶)33.33%]。农业活动是根据地区习俗进行的。结果表明，不同消耗水平和消耗次数对叶绿素指数、产量和氮素利用效率影响显著。播前施氮量为120 kg hm -1时籽粒产量最高，且叶绿素指数与籽粒产量呈正相关。

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来源期刊

Romanian Agricultural Research 农林科学-农艺学

CiteScore

0.90

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal ROMANIAN AGRICULTURAL RESEARCH is an “open access” one, which publishes original articles, short communications, presenting new scientific results – theoretical, experimental and technical – on plant breeding and genetics, physiology, biotechnology, mineral nutrition and plant protection, in field crops. Reviews on up-to date subjects and recent research, preferably from Eastern Europe, may also be published.