|
| Effects of liquid organic fertilizer on absorption of lead and cadmium and dry matter accumulation in different organs of potato |
| Received:October 06, 2015 |
| View Full Text View/Add Comment Download reader |
| KeyWord:liquid organic fertilizer;lead and cadmium pollution;potato;mitigation effect |
| Author Name | Affiliation | E-mail | | WANG Pei-pei | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China | | | ZHENG Shun-lin | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
Key Laboratory of Southwest Region Crop Cultivation, Chengdu 611130, China | zhengshunlin123@163.com | | HE Cai-lian | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China | | | ZHANG Qin | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China | | | WAN Nian-xin | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China | | | LUO Yan-qin | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China | | | YUAN Ji-chao | College of Agriculture, Sichuan Agricultural University, Chengdu 611130, China
Key Laboratory of Southwest Region Crop Cultivation, Chengdu 611130, China | |
|
| Hits: 3227 |
| Download times: 3922 |
| Abstract: |
| Controlling heavy metal pollution that is a potential threat to crop growth in soil has been a hot topic. In this study, the effects of liquid organic fertilizer on the absorption of lead and cadmium in different organs of potato and on plant growth were investigated in pot experiment. Under liquid organic fertilizer as basal fertilizer, there are significant differences in the absorption of lead and cadmium in different organs of potato. In lead and lead/cadmium pollution, lead and cadmium accumulation by different parts of potato was roots >leaves >stems >tubers, whereas lead and cadmium accumulation was roots >stems >leaves >tubers in cadmium pollution. The root/shoot ratio, the accumulation of dry matter and the yield of single potato plant were the maximum at the highest organic fertilizer rate. Applying liquid organic fertilizer decreased lead and cadmium uptake in potato tubers by 34.7% and 52.1%, respectively, as compared to the control. Lead concentrations in potato tubers did not exceed the standard under lead pollution. However, cadmium concentrations in the tubers exceeded the standard during tuber expansion period though tuber cadmium in some treatments fell below the standard at the mature stage. The present experimental results show that liquid organic fertilizer can reduce the content of lead and cadmium in potato, and that harvesting potato earlier might reduce cadmium uptake by potato tubers. |
|
|
|
