| dc.creator | Han,Ying | |
| dc.creator | Chen,Xiangwei | |
| dc.creator | Wang,Enheng | |
| dc.creator | Xia,Xiangyou | |
| dc.date | 2019-03-01 | |
| dc.date.accessioned | 2019-04-24T21:20:47Z | |
| dc.date.available | 2019-04-24T21:20:47Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000100153 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/56395 | |
| dc.description | ABSTRACT Biochar amendment to soils can improve soil P availability, but details on the optimum application of biochar to black soils in Northeast China are limited. Three types of biochar were produced at six pyrolysis temperatures (between 200 and 700 °C) and then added to black soil samples. P adsorption-desorption isotherms were fitted by the Langmuir model to evaluate the changes in soil P adsorption-desorption after biochar amendment. Changes in P adsorption and desorption depended on biochar feedstock type and pyrolysis temperature. When pyrolysis temperature increased up to 400 °C, P sorption maximum (Qm) of soybean pod (SP) and soybean straw (SS) biochar-amended soils were enhanced from 855.65 and 428.84 mg kg-1 to 1666.67 and 1547.62 mg kg-1, respectively, while a further increase in the pyrolysis temperature lowered the adsorption capacity. However, P adsorption of corncob (CC) biochar amended soils declined from 1428.57 mg kg-1 to 556.70 mg kg-1 as pyrolysis temperature increased. Higher P desorption in SP and SS compared with CC indicated that SP and SS biochar produced at higher than 400 °C pyrolysis temperatures were considered to be the optimum biochar to enhance P availability in the black soils of Northeast China. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392019000100153 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.79 n.1 2019 | |
| dc.subject | Batch equilibrium method | |
| dc.subject | biochar amendment | |
| dc.subject | black soil | |
| dc.subject | feedstock type | |
| dc.subject | pyrolysis temperature | |
| dc.subject | phosphorus adsorption and desorption. | |
| dc.title | Optimum biochar preparations enhance phosphorus availability in amended Mollisols of Northeast China | |
