| Effects of coupled bio\|organic and chemical fertilizers on soil nematode communities in winter wheat field in the fluvo\|aquic soil region of Northern China |
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| DOI：10.7606/j.issn.1000-7601.2020.01.29 |
| Key Words: bio\|organic fertilizer chemical fertilizer soil nematodes community structure winter wheat field fluvo\|aquic soil |
| Author Name | Affiliation | | ZHANG Ting | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | KONG Yun | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
College of Plant Protection, Shenyang Agriculture University, Shenyang 110866, China | | XIU Weiming | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
College of Plant Protection, Shenyang Agriculture University, Shenyang 110866, China | | LI Gang | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | ZHAO Jianning | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | YANG Dianlin | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | ZHANG Guilong | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | WANG Lili | Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tiajin Key Laboratory of Agro-Environment and Agro-Product Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China |
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| Abstract: |
| In order to study the effect of different fertilization treatments on soil nematode community in winter wheat field in the fluvo\|aquic soil region of Northern China, field experiments with different fertilization treatments were set up in Ninghe district of Tianjin City. Five treatments were implemented including the single application of fertilizer (A1), single application of bio\|organic fertilizer (A2), reduced by 50% of the amount of bio\|organic fertilizer and fertilizer application (A3), equal application of bio\|organic fertilizer and fertilizer application (A4), and incremental 50% bio\|organic fertilizer combined with chemical fertilizer (A5). The results showed that a total of 6 orders, 17 families and 26 genera of soil nematodes were identified in the whole investigation period, among which bacterivores nematodes and plant parasitic nematodes were dominant nutritional groups in all treatments. The number of soil nematode worms under different treatments was A4>A5>A3>A2>A1, among which A4 was significantly higher than A1 (P<0.05). The relative abundance of bacterivores nematodes and predator\|omnivorous nematodes increased in the order of 1.67%~7.00% and 1.00%~18.67%, respectively, and the number of fungal nematodes and plant parasitic nematodes increased by 2.33%~12.00% and 0.34%~10.34%. From the soil nematode ecological index, the dominance index (λ) and enrichment index (EI) are not affected by fertilization measures. Bio\|organic fertilizer\|fertilizer application can increase soil nematode diversity. The WI, MI, SI and J indexes of A5 treated nematodes were higher than other treatments, indicating that the application of bio\|organic fertilizer in the application process enriched the soil nematode food network structure and improve soil environmental stability and soil health. It was seen that the combination of bio\|organic fertilizer and chemical fertilizer promoted the propagation of nematodes to a certain extent, improved the diversity of nematode species, and reduced the degree of interference of nematode by enhancing the stability of its food network. |
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