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| Effects of water-soluble organic fertilizer on yield of rice grain and cadmium absorption in rice grain and straw |
| Received:November 27, 2016 |
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| KeyWord:cadmium contaminated soil;water-soluble organic fertilizer;yield of rice grain;antioxidant enzyme;cadmium concentration in rice grain |
| Author Name | Affiliation | E-mail | | LIU Li-shan | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | | | HUANG Yun-xiang | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | yxhuang63@163.com | | HUANG Chu-yu | Agricultural Science Research Institute of Qionghai, Hainan Province, Qionghai 571429, China | | | MAN Hai-yan | College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China | |
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| Abstract: |
| A pot experiment was conducted to study the effects of water-soluble organic fertilizer on antioxidant enzyme activities in flag leaves and the absorption of cadmium (Cd) in rice grain and straw. The results showed that the yield of rice grain was increased, and the activity of SOD at the early booting stage (BBCH 41) and SOD, POD at the early milk stage (BBCH 73) were decreased significantly after applying water-soluble organic fertilizer. The Cd concentration in rice grain reduced by 2.9%~21.5%, while the Cd concentration in straw enhanced by 26.8%~99.1%. The treatment of foliar application 750 times diluted water-soluble organic fertilizer caused the highest increase of rice grain yield up to 43.1%, and the Cd content in rice grain decreased to lowest concentration after the same foliar application combined with basal 0.16 mL·kg-1 water-soluble organic fertilizer. |
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