|
| Distribution of total and exchangeable aluminum in soil aggregates with different tea cultivars |
| Received:April 30, 2018 |
| View Full Text View/Add Comment Download reader |
| KeyWord:tea cultivar;soil aggregate;total aluminum;exchangeable aluminum;distribution |
| Author Name | Affiliation | E-mail | | YANG Jia | College of Resources, Sichuan Agricultural University, Chengdu 611130, China | | | ZHENG Zi-cheng | College of Resources, Sichuan Agricultural University, Chengdu 611130, China | zichengzheng@aliyun.com | | LI Ting-xuan | College of Resources, Sichuan Agricultural University, Chengdu 611130, China | |
|
| Hits: 1894 |
| Download times: 1923 |
| Abstract: |
| In this study, we aimed to investigate the composition of soil aggregates and the distribution of total and exchangeable aluminum in soil aggregates with different tea cultivars. The content of total and exchangeable aluminum in soil aggregates with different tea cultivars (Fudingdabaicha, Chuancha No.3, Chuannonghuangyazao, and Chuanmu No.217) was measured. The results showed that the content of soil aggregates initially decreased, and then increased with the decrease in particle size of soil aggregates. The content of >5 mm aggregates was relatively high, accounting for 60.52%~76.49% of the total soil. However, the content of 0.5~0.25 mm aggregates was relatively low. The highest content of soil aggregates was observed in soil cultivated with Fudingdabaicha. Higher content of total and exchangeable aluminum was observed in smaller aggregates. The content of total and exchangeable aluminum in soil aggregates cultivated with Chuancha No. 3 was the highest among tea cultivars. The contribution rate of total and exchangeable aluminum for >5 mm aggregates, which was 53.10%~68.10%, was found to be the highest. The contribution rate of > 5 mm aggregates for soil with Fudingdabaicha was higher than that for soil with Chuancha No.3, followed by Chuanmu No.217 and Chuannonghuangyazao. Among the four tea cultivars, the soil cultivated with Fudingdabaicha showed the highest content of > 0.25 mm aggregates with better soil structure. The content of total and exchangeable aluminum in soil aggregates cultivated with Chuancha No.3 was higher than that with other tea cultivars. Higher aluminum content in soil aggregates results in soil acidification, and also soil productivity and quality. |
|
|
|
