| The soil nutrients and functional diversity of soil bacterial community under the co-cultivation mode of breeding goose in cornfield |
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| DOI：10.7606/j.issn.1000-7601.2021.02.01 |
| Key Words: co-cultivation mode of breeding goose in cornfield soil nutrient soil enzyme activities the functional diversity of soil bacterial community |
| Author Name | Affiliation | | LIU Shuang | College of Agricultural, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Yanyu | College of Agricultural, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | YANG Huanmin | College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Peng | College of Agricultural, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | YIN Kuide | College of Agricultural, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | ZHANG Xingmei | College of Agricultural, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| In this experiment, co-cultivation mode of breeding goose in cornfield for 7 years was used as the treatment and the conventional corn field as the control. By analyzing the dynamic changes of soil nutrient contents, soil enzyme activity, and Biolog-Ecoplate, we explored the effects of the co-cultivation mode of breeding goose in the cornfield on the characteristics of soil nutrients and soil bacteria, so as to lay a theoretical foundation for promoting ecological agriculture. The results showed that compared with the conventional corn planting mode, in the period of tasseling, milking, and maturing of corn growth, the soil nutrients under the co-cultivation mode of breeding goose in cornfield increased in different degrees. The soil organic matter contents, available phosphorus, available potassium, and alkali hydrolyzed nitrogen increased by 39.34%, 368.78%, 92.19%, and 66.03%, respectively, while the pH value decreased by 5.75%. The activities of alkaline phosphatase, urease, sucrase, cellulose, and catalase were significantly higher under the co-cultivation mode of breeding goose in the cornfield than those in the conventional corn model, with the maximum values of 56.82, 117.42, 8 973.49, 5.28 mg·kg-1·h-1, and 2 201.47 mL·kg-1·h-1, respectively, and increased with increasing temperature. The co-cultivation mode of breeding goose in the cornfield improved the metabolic capacity of soil bacteria. The AWCD value reached 1.44 during the milking of corn. Its Pielou uniformity index and Shannon-wiener index were 4.95% and 6.04% higher than those of CK during the corn maturing, respectively. The utilization rates of amino acids, polymers, amines, carbohydrates, carboxylic acids (except the mature period), and phenolic acids in soil bacteria in the co-cultivation mode of breeding goose in cornfield were significantly higher than that the conventional corn planting mode, and different with the growth period, the peak AWCD values reached 1.60, 1.51, 1.47, 1.47, 1.39, and 1.09, respectively. The RDA analysis showed that the utilization rate of six kinds of carbon sources by soil bacteria was positively correlated with soil alkali hydrolysable nitrogen, available phosphorus, available potassium, organic matter, and other nutrients, and negatively correlated with pH value, which indicated that soil bacteria had stronger ability to use substrates, promoted nutrient cycling, and effectively reduced soil pH value under the co-cultivation mode of breeding goose in the cornfield. |
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