印度马铃薯品种在生长、养分吸收和块茎产量方面对氮肥的反应

IF 2.3 3区 农林科学 Q1 AGRONOMY
Renu Yadav, V. P. S. Panghal, Rahul, Ram Prakash
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引用次数: 0

摘要

马铃薯生产者面临的主要挑战之一是通过适当的氮肥管理最大限度地提高产量和质量。在印度西北部条件下,连续两年对两个马铃薯品种(即 Kufri Surya 和 Kufri Sadabahar)进行了试验,试验采用随机区组设计(阶乘),设三次重复,在五个氮肥水平(0、75、150、225 和 300 千克/公顷)下进行。结果表明,大多数生长参数和茎秆对氮磷钾的吸收量在氮素水平为 300 千克/公顷时最大,在统计学上与氮素水平为 225 千克/公顷时相当;而在产量参数和块茎对氮磷钾的吸收量方面,氮素水平为 225 千克/公顷时最佳,其值最高。这表明,氮剂量超过 225 千克/公顷会对作物产量参数产生负面影响。就品种而言,Kufri Sadabahar 在所有注意到的生长和产量参数以及块茎和茎秆对氮磷钾的吸收方面都明显优于品种 Kufri Surya。关于作物收获后的土壤肥力状况,施氮量最高的地块土壤中残留的氮较多,而未施氮的地块(对照地块)土壤中残留的磷和钾较多,75 公斤/公顷的施氮量紧随其后。这些结果为改进印度西北部哈里亚纳邦亚热带地区这两个品种的氮肥施用量提供了有益的建议。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Response of Indian Potato Varieties to Nitrogen Fertilization Regarding Growth, Nutrient Uptake, and Tuber Yield

Response of Indian Potato Varieties to Nitrogen Fertilization Regarding Growth, Nutrient Uptake, and Tuber Yield

One of the major challenges for potato producers is to maximize its yield and quality by properly managing the nitrogen fertilization. An experiment was conducted under North-Western Indian conditions during two consecutive years with two potato varieties, i.e. Kufri Surya and Kufri Sadabahar under five nitrogen levels (0, 75, 150, 225, and 300 kg/ha) in a randomized block design (factorial) with three replications. The results revealed that most of the growth parameters and NPK uptake by haulms were maximum at 300 kg/ha nitrogen level that was statistically at par with nitrogen level 225 kg/ha, while for yield parameters and NPK uptake by tubers, nitrogen level 225 kg/ha was the best with the highest value. It depicts that crop yield parameters are negatively affected by the nitrogen dose of above 225 kg/ha. So far the variety is concerned, Kufri Sadabahar was significantly better for all the noted growth and yield parameters as well as NPK uptake by tubers and haulms than the variety Kufri Surya. Regarding the soil fertility behaviour after harvest of the crop, higher left over nitrogen in soil was recorded for the highest applied nitrogen dose, whereas phosphorus and potassium left over in soil was recorded more where no nitrogen was applied (control plot), which was closely followed by 75 kg/ha nitrogen level. The results provide useful recommendations for the improvement of nitrogen fertilization rate for these two varieties in sub-tropical region of north western India in Haryana state.

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来源期刊
Potato Research
Potato Research AGRONOMY-
CiteScore
5.50
自引率
6.90%
发文量
66
审稿时长
>12 weeks
期刊介绍: Potato Research, the journal of the European Association for Potato Research (EAPR), promotes the exchange of information on all aspects of this fast-evolving global industry. It offers the latest developments in innovative research to scientists active in potato research. The journal includes authoritative coverage of new scientific developments, publishing original research and review papers on such topics as: Molecular sciences; Breeding; Physiology; Pathology; Nematology; Virology; Agronomy; Engineering and Utilization.
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