| Effects of tomato straw returning to the field with decomposing microbial inoculant on tomato production |
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| DOI：10.7606/j.issn.1000-7601.2022.03.17 |
| Key Words: tomato straw returning to the field decomposition-fungi agents soil characters yield |
| Author Name | Affiliation | | SUN Xiaomei | School of Resource and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YU Zhaopeng | Liangzhou District Agricultural Product Quality and Safety Supervision and Management Station, Wuwei, Gansu 733000, China | | L Wenjun | Agricultural Ecology and Resource Protection Technology Extension Station, Lanzhou, Gansu 730000, China | | CHEN Nianlai | School of Resource and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | JI Shengcheng | Liangzhou District Agricultural Product Quality and Safety Supervision and Management Station, Wuwei, Gansu 733000, China | | XIAO Chaoqing | Agricultural Ecology and Resource Protection Technology Extension Station, Lanzhou, Gansu 730000, China | | LI Jihong | Management and Conservation Center of Qilian Mountain National Nature Reserve, Lanzhou, Gansu 730000, China | | WANG Jian | Agricultural Ecology and Resource Protection Technology Extension Station, Lanzhou, Gansu 730000, China |
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| Abstract: |
| To expand the utilization of vegetable straw wastes, this experiment explored the effects of tomato straw returning to the field with decomposing microbial inoculant on soil characteristics and tomato yield in 2019. The treatments included C of no straw returning with no decomposing agent, T1 of straw returning, T2 of straw returning with decomposing agent of ‘Yuandongli’, T3 of straw returning with decomposing agent of ‘Youchun’, and T4 of straw returning with decomposing agent of ‘Wobao’. The results showed that, ascompared the control with the treatment groups, soil pH reduced, concentrations of soil organic matter, available P and K increased. During the fruit mature period, the content of soil organic matter under T2 treatment was significantly higher than those under T1 (7.3%), T3 (8.1%), T4 (14.2%) and Control (26.9%). After decomposition, the content of available P under T2 was higher than that of Control (24%), T1 (11.3%), T3 (4.4%) and T4 (8.7%), respectively. The numbers of bacteria and actinomycetes significantly increased with tomato straw returning to the field with decomposing microbial inoculant,in which the proportion of actinomycetes were higher than that of bacteria and fungi. The growth and yield of tomato were significantly enhanced by straw returning to the field with decomposing microbial inoculant. The main reason for increased tomatoes yield was the enhanced numbers of fruit set per plant. The effect of ‘Yuandongli’ on yield was better than that of ‘Youchun’ and ‘Wobao’. Effects of environmental factors on yield and yield components based on redundancy analysis showed that soil organic matter content, available phosphorus, actinomycetes number were positively correlated with fruit number per plant and yield per plant, and the correlation between organic matter and fruit number per plant was higher than that between organic matter and yield per plant. These results suggested that tomato straw returning to the field with decomposing microbial inoculant regulate the number of microorganisms, increase organic matter and soil nutrients, that in turn improve the fruit number per plant and yield. |
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