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Potassium Efficiency of Different Low K Tolerant Soybean Varieties(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2014年03期
Page:
385-388
Research Field:
Publishing date:

Info

Title:
Potassium Efficiency of Different Low K Tolerant Soybean Varieties
Author(s):
LI Xing-tao1; 2; TONG Xiao-nan1; YU Hai-qiu2; WANG Ning3; WANG Xiao-Guang2; CAO Min-jian2
1.College of Life and Environment,Gannan Normal University,Ganzhou 341000,China;2.Agronomy College,Shenyang Agricultural University,Shenyang 110866,China;3.Agricultural Information Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China
Keywords:
Soybean cultivars; Low K tolerance; K uptake efficiency; K utilization efficiency
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2014.03.0385
Abstract:
In order to study K efficiency of different low K tolerant soybean varieties under low K stress,we carried out pot culture,with low Ktolerant soybean varieties Shennong 6 and Jiunong 15,low K sensitive soybean varieties Tiefeng 31 and GD8521 under low K stress and K applied treatment.Significant difference of K utilization efficiency was found in low K tolerant soybean between low K stress and K applied treatment,while the K utilization efficiency of low K sensitive soybean between low K stress and K applied treatment was no significant difference.The K uptake efficiency of low K tolerant and low K sensitive soybean cultivars declined under the low K stress.The grain yield K utilization efficiency and K harvest index of low K tolerant soybean cultivars under low K stress were significant higher than that under K applied treatment.However,no significant differences of low K sensitive soybean cultivars were found between low K stress and K applied treatment.These results implied that the higher K utilization efficiency caused the higher tolerance coefficient for the low K sensitive soybean cultivars.

References:

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Last Update: 2014-08-01