| Effects of different amounts of residual film on soil nitrogen, eight major ions content and microorganisms in cotton field |
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| DOI：10.7606/j.issn.1000-7601.2022.05.24 |
| Key Words: residue amount film cotton field nitrogen microorganism salt ion |
| Author Name | Affiliation | | LI Yuhuan | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China | | HE Xinlin | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China | | YANG Lili | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China | | WANG Yuzhi | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China | | XU Yang | College of Water Resources and Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production and Construction Corps, Shihezi University, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| Through field test, eight ions and microorganisms, eight residual film gradients of 150 kg·hm-2（T1）,230 kg·hm-2（T2）,465 kg·hm-2（T3），857 kg·hm-2（T4）,1 250 kg·hm-2（T5）,1 640 kg·hm-2（T6）, in situ soil 512 kg·hm-2（CK1） and no plastic film residue were set up to determine soil nitrogen, eight major ions content, microbial community diversity and other indicators.The results showed that with the increase of residual film amount, soil TN and NO-3-N content decreased gradually, while NH+4-N content increased first and then decreased. When the amount of residual film was more than 512 kg·hm-2, the contents of NO-3-N and NH+4-N content decreased significantly. Compared with CK2, the contents of TN, NO-3-N and NH+4-N decreased by 38.77%, 49.21% and 34.38% respectively under the condition of high residual film amount of 1 640 kg·hm-2 (T6). With the increase of residual film amount, Na+, Mg2+, Ca2+, Cl-, SO2-14,HCO-3, CO2-3, K+ gradually accumulated in 0~20 cm soil layer. When the residual film amount was more than 512 kg·hm-2, the soil microbial evenness and diversity were lower than those of treatment T1, T2, T3 and CK2. In conclusion, it is clear that the residual film affects the activity of soil microorganisms and led to the shallow accumulation of salt and the degradation of soil nutrients. Therefore, high\|strength residual film is not conducive to healthy development of agriculture. |
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