不同施氮量对马铃薯养分吸收及产量的影响

【目的】研究氨素不同施用量在马铃薯不同的生育期对马铃薯各器官氮、磷、钾养分吸收和产量的影响。【方法】采用田间小区试验。【结果】在马铃薯生育期，施氮肥均可提高植株器官N、P、K质量分数，其中N2P2K2处理的各器官N、P、K质量分数最高，均显著高于NOP2№处理。生产1000kg块茎所需N、P205、K20平均比例为1：0．49：2。施氮肥均可提高马铃薯产量和商品率，其中N2P2K2处理（225kg／hm2）对马铃薯增产和提高商品薯率效果最佳，较NoP2K2处理显著提高21．33％和18．56％。【结论】从马铃薯产量和经济效益来看，宁夏中部旱作区种植马铃薯最佳氮肥施用量是225kg／hm2。...

Full description

Saved in:
Bibliographic Details
Published in西南农业学报 Vol. 30; no. 7; pp. 1600 - 1605
Main Author 曹哲 何文寿 侯贤清 党柯柯 赵小霞 俞晓红
Format Journal Article
LanguageChinese
Published 宁夏大学农学院,宁夏银川,750021 2017
Subjects
产量
养分吸收
马铃薯
养分吸收
Potato
产量
Yield
马铃薯
Nutrient absorption
Online AccessGet full text

Cover

More Information
Summary:【目的】研究氨素不同施用量在马铃薯不同的生育期对马铃薯各器官氮、磷、钾养分吸收和产量的影响。【方法】采用田间小区试验。【结果】在马铃薯生育期，施氮肥均可提高植株器官N、P、K质量分数，其中N2P2K2处理的各器官N、P、K质量分数最高，均显著高于NOP2№处理。生产1000kg块茎所需N、P205、K20平均比例为1：0．49：2。施氮肥均可提高马铃薯产量和商品率，其中N2P2K2处理（225kg／hm2）对马铃薯增产和提高商品薯率效果最佳，较NoP2K2处理显著提高21．33％和18．56％。【结论】从马铃薯产量和经济效益来看，宁夏中部旱作区种植马铃薯最佳氮肥施用量是225kg／hm2。
Bibliography:CAO Zhe, HE Wen-shou , HOU Xian-qing, DANG Ke-ke, ZHAO Xiao-xia, YU Xiao-hong （School of Agriculture, Ningxia University, Ningxia Yinchuan 750021, China）
51-1213/S
Potato ; Nutrient absorption ; Yield
[ Objective] The present study was conducted to probe the effects of applying different amounts of nitrogen on the nitrogen, phosphorus and potassium nutrient absorption in different organs of potato and its yield in different growth stages. [ Method ] A field experiment was adopted. [ Result] In potato growth period, N fertilizer could improve mass fraction of N, P, K in potato organs, of which N2P2K2treatmeat was the highest and significantly higher than that without using N fertilizer（ No P2 K2 ） Average nutrition ration （N： P2 05：K2 0 ）produ- cing 1000 kg tubers was 1 ： 0.49： 2. N fertilizer could obviously improve the potato yield and commodity rate, and the potato yield and com- modity rate were the best with using NzP2K2treatment （225 kg/hm2）, compared with NoP2Kztreatment, the potato yield and commodity rat
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2017.7.023