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- Title
石灰性缺铁土壤不同铁效率大豆品种产量及相关性状 对Fe-EDDHA肥的响应.
- Authors
韩喜国; 杨波; 于德彬; 徐长洪; 孟凡钢; 邱强; 赵婧; 张鸣浩; 闫晓艳; 张伟
- Abstract
Iron deficiency in calcareous soil is the main limiting factor of soybean yield. The aim of this study was to investigate the response of yield and related traits of soybean varieties with different iron efficiency to Fe-EDDHA fertilization under iron stress. Six varieties with different iron efficiency were applied with Fe-EDDHA at 5 fertilizer levels(0, 3, 6, 9, 12 and 15 kg·hm-2)in a calcareous iron-deficient soil of Taonan of Jilin Province in 2014-2015. The effects of Fe-EDDHA on leaf SPAD, agronomic characteristics and yield of soybean varieties with different iron efficiency were studied. The results showed that in calcareous soil, there were significant differences in yield and related traits of varieties with different iron efficiency in response to Fe-EDDHA fertilization. In order to ensure the normal yield of soybean varieties with different iron efficiency, the demand for iron fertilizer increased gradually from iron efficient varieties to iron inefficient varieties, and Fe fertilizer was 0-3 kg·hm-2 for iron-efficient varieties and 3-6 kg·hm-2 for medium iron-effective varieties. Fe-EDDHA(6-9 kg·hm-2)was applied to iron-ineffective varieties, and the increase of iron application rate had no significant effect on the yield of varieties with different iron efficiency. Iron-efficient and iron-inefficient varieties responded to iron fertilizer mainly in the late reproductive stage, while medium iron-effective varieties responded to iron fertilizer mainly through the change of chlorophyll content at vegetative period. The response of different varieties to iron fertilizer had a year effect, and more iron fertilizer should be applied in 2015 to achieve normal yield. In conclusion, the application of Fe efficient varieties in the Fe deficiency area of calcareous soil is the most economical and effective measure for iron deficiency correction, and a small amount of Fe-EDDHA fertilizer can be applied in the Fe deficiency area or in year of severe iron shortage to guarantee the yield.
- Subjects
JILIN Sheng (China); IRON fertilizers; CALCAREOUS soils; IRON; IRON deficiency; FERTILIZERS
- Publication
Chinese Journal of Oil Crop Sciences, 2022, Vol 44, Issue 6, p1329
- ISSN
1007-9084
- Publication type
Article
- DOI
10.19802/j.issn.1007-9084.2021277