Effects of Lignin on Root Activity and Soil Nutrients of <i>Malus hupehensis</i>. var. <i>pingyiensis</i> under the Use of Organic Fertilizer
- 1 Forestry College of Shandong Agricultural University, Taian, China
- 2 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 3 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 4 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 5 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 6 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 7 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 8 College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, China
- 9 Shandong Provincial University Key Laboratory of Silviculture, Taian, China
Abstract
One-year Malus hupehensis . var. pingyiensis seedlings potted in soil mixed with 10% or 40% organic fertilizer were treated with two concentrations of lignin (1.5 and 2.5 g·kg - 1 ), and detected the effects of lignin on root activity and soil nutrients in rhizosphere soil of Malus hupehensis . var. pingyiensis . (1) Lignin improved root activity of Malus hupehensis . var. pingyiensis , increased soil available nitrogen contents and soil organic matter contents. (2) Under 10% organic fertilizer, lignin improved soil available P and K contents. The root activity in Malus hupehensis . var. pingyiensis was the largest in 2.5 g·kg - 1 lignin treatment. (3) Under 40% organic fertilizer, compared with the CK2 (the treatment of soil with organic fertilizer content 40%), lignin decreased the content of rhizosphere soil available K. 1.5 g·kg - 1 lignin treatment had obviously increased the content of soil available P. The root activity was the largest in 2.5 g·kg - 1 lignin treatment, while the content of rhizosphere soil available K lowered 8.5% compared with that of CK2 in the same treatment. Lignin changed the soil nutrients, 2.5 g·kg - 1 lignin significantly improved root activity of Malus hupehensis . var. pingyiensis . The results provided a theoretical basis for the regulation of root activity and soil nutrients in Malus hupehensis . var. pingyiensis .
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