| Response of physical and chemical properties of soil in apple root\|zone to black ground fabric mulching |
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| DOI：10.7606/j.issn.1000-7601.2020.05.18 |
| Key Words: black ground fabric mulching apple tree root\|zone soil physic\|chemical properties temporal and spatial variation |
| Author Name | Affiliation | | LI Fakang | College of Plant Protection, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | XIE Yuqin | College of Plant Protection, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | XUE Yingyu | College of Plant Protection, Gansu Agricultural University, Lanzhou,Gansu 730070, China | | LI Long | Academy of Agricultural Sciences of Linxia Hui Autonomous Prefecture, Linxia, Gansu 731100, China | | LI Xiaowei | College of Plant Protection, Gansu Agricultural University, Lanzhou,Gansu 730070, China |
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| Abstract: |
| In order to explore the effects of black ground fabric mulching on the soil physical and chemical properties in apple root\|zone, this study set up two treatments of black ground fabric mulching and clean tillage, and determined the physical and chemical properties of soil layer of 0~60 cm during the dormancy, full\|bloom, young fruit, fruit expansion, and fruit maturity stages of apple trees from February to December 2018. The results showed that，compared with clean tillage, the black ground fabric mulching increased soil water contents by 0.16%~7.10%, decreased soil pH by 0.06~0.43 except that increased 0.12 in the 40~60 cm soil layer during the dormancy stage. The organic matter content in 0~20 cm soil layer from dormancy stage to young fruit stage, 40~60 cm soil layer in dormancy stage and full\|bloom stage, 0~60 cm soil layer in fruit expansion stage and 40~60 cm soil layer in fruit maturity stage increased by 0.05~4.05 g·kg-1. Available N content increased by 2.10~46.05 mg·kg-1. Available P increased by 5.57~57.58 mg·kg-1 except that the soil layer of 40~60 cm in dormancy stage and 20~40 cm in full\|bloom stage decreased by 0.87 mg·kg-1 and 0.43 mg·kg-1, respectively. The content of available K increased by 43.78~182.19 mg·kg-1. The effects intensity of black ground fabric mulching treatment on various factors including the soil water content, pH，the content of organic matter, available N, available P, and available K were quite different during the growth period and among soil layers, the effect on increasing soil water content from young fruit stage to fruit expansion stage (more than 4.60%) was better than that in dormancy stage and full\|bloom stage (less than 3.00%). The increase effect on the content of soil available K was most obvious during fruit maturity stage, the increment was more than 107.00 mg·kg-1, and between 20~40 cm soil layers was the most obvious, the increment was more than 97.00 mg·kg-1. There was no obvious rule in the intensity of other factors. |
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