Luxury Absorption of Potassium by Potato Plants

被引：104

作者：

Kang, Wenqin ^{[1
]}

Fan, Mingshou ^{[1
]}

Ma, Zhong ^{[2
]}

Shi, Xiaohua ^{[1
]}

Zheng, Hongli ^{[1
]}

机构：

[1] Inner Mongolia Agr Univ, Coll Agron, Hohhot 010019, Peoples R China

[2] Truman State Univ, Dept Biol, Kirksville, MO 63501 USA

来源：

AMERICAN JOURNAL OF POTATO RESEARCH | 2014年 / 91卷 / 05期

基金：

国家科技攻关计划;

关键词：

Potato; Potassium; Luxury absorption; SOLANUM-TUBEROSUM; YIELD;

D O I：

10.1007/s12230-014-9386-8

中图分类号：

S3 [农学（农艺学）];

学科分类号：

090104 [作物信息科学与技术];

摘要：

Pot and field experiments were conducted to test whether excessive potassium (K) uptake by potato plants occurs under conditions with or without irrigation at different sites. The results from both pot and field experiments showed that potato biomass and tuber yield peaked at a certain level of external K, and did not increase further with additional K supply. However, K absorption by potato plants continued to increase within the range of K used. It was concluded that luxury absorption of K by potato plants occurred with high K availability in the media. This suggests that K fertilizer recommendation based on the index "K requirement per tuber production" may be unreliable, because the optimum crop need varies with production conditions.

引用

页码：573 / 578

页数：6

共 18 条

[1]

The effect of different levels of additional potassium on yield and industrial qualities of potato (Solanum tuberosum L.) in an irrigated arid region [J].