| Response of integrated fertility of apricot orchard soil to artificial grass pattern and its environmental interpretation in the eastern Gansu Province of loess plateau |
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| DOI：10.7606/j.issn.1000-7601.2018.04.05 |
| Key Words: apricot orchard artificial grass pattern soil integrated fertility eastern Gansu Province of loess plateau |
| Author Name | Affiliation | | WANG Gen-wang | University Provincial Key Laboratory for Protection and Utilization of Longdong Bio-resources in Gansu Province, Qingyang, Gansu, 745000, China
College of Life Science and Technology, Longdong University, Qingyang, Gansu, 745000, China | | SONG Xi | College of Agriculture and Forestry, Longdong University, Qingyang, Gansu, 745000, China |
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| Abstract: |
| In order to reveal the response of integrated fertility of apricot orchard soil to three different artificial grasses patterns (Pattern A: Apricot + Lily; Mode B: Apricot + Purple Alfalfa; Mode C: Apricot + Lily + Purple Alfalfa; Control group CK: Apricot + clear tillage) in the eastern Gansu province of loess plateau, using conventional methods to determine the soil physical and chemical properties, enzyme activity and soil microbial community and other soil environmental indicators. The results showed that: the soil alkaline phosphatase and invertase activity in pattern A (18.18±0.51 μg·g-1·h-1) and C (213.15±3.69 μg·g-1·h-1) were the higher activity, while the soil urease in pattern B (25.52±0.79 μg·g-1·h-1) and C (26.44±0.57 μg·g-1·h-1) were demonstrated the higher activity. and the content of soil available potassium and available phosphorus had no significant difference among the three patterns but the soil alkalized nitrogen content in model B (36.46±1.84 mg·kg-1) was the highest; the trends of 4 kinds of soil microbial diversity index in different grass patterns was pattern C> pattern B> pattern A>CK , and Shannon-Wiener index and Pielou evenness had no significant difference between pattern B and pattern C; Nonmetric multidimensional scaling analysis sorting results showed that the soil integrated fertility difference were strongly affected by Patrick richness index (r2=0.8489,) and soil urease activity (r2=0.8111). Variance analysis revealed that 79% of the total soil integrated fertility variation in the rhizosphere soil of apricot orchard was explained based on the soil physicochemical properties, enzyme activity and soil microbial community properties. Soil enzyme activity and microbial community properties were the main environmental factors(41%) affecting the soil integrated fertility. Moreover, the independent effects of soil physical and chemical properties (3%),the impact on soil fertility was significantly lower than soil enzyme activity (15%) and microbiological properties (13%). |
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