| Cite this article: | 田露,刘景辉,米俊珍,等.缩行带状种植和保水剂对滴灌燕麦根系和叶片衰老特性的影响[J].灌溉排水学报,0,():-. |
| TIan Lu,LIU Jinghui,MI Junzhen,et al.缩行带状种植和保水剂对滴灌燕麦根系和叶片衰老特性的影响[J].灌溉排水学报,0,():-. |
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| Effects of Strip Cropping with Reducing Row Spacing and Super Absorbent Polymer on Senescence Characteristics of Roots and Leaves of Oat under drip irrigation |
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TIan Lu,LIU Jinghui,MI Junzhen,et al
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1.Agronoy College of Inner Mongolia Agriculture University;2.Agriculture and Forestry Sciences of Ulanqab;3.Agricultural and Animal Husbandry Ecological Resources Protection Center of Ulanqab
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| Abstract: |
| [Objective] In order to establish an efficient drip irrigation planting method suitable for the cultivation of high-quality oat. [Method] In 2019-2020, one split zone test which the main plot was row spacing including three levels of equal row spacing planting with row spacing 20cm (A), strip planting with row spacing 15cm (B), strip planting with row spacing 10cm (C) and the subplot was super absorbent polymer including two levels of 0 (N) and 22.5 kg/hm2 was conducted. The effects of row spacing and super absorbent polymer on the senescence characteristics of oat root and flag leaf were analyzed. [Results] (1) Both row spacing and super absorbent polymer could significantly (P < 0.01) or significantly (P < 0.05) affect the root activity, SOD, MDA content and soluble protein content of oat root and flag leaf. The effects of the interaction of the two factors on each index were inconsistent in different growth stages. In the flowering and filling stages, the interaction of the two factors significantly (P < 0.01) or significantly (P < 0.05) affected the root activity, root SOD content, flag leaf SOD, flag leaf MDA content and flag leaf soluble protein content, significantly (P < 0.05) affected the root soluble protein content, but had no significant effect on the root MDA content. (2) No matter whether super absorbent polymers were applied or not, the root activity, SOD activity of root and flag leaf and soluble protein content of the three row spacing were all showed B>A>C; the content of MDA in root and flag leaf were showed C>A>B. Under the condition of applying super absorbent polymer (Y), compared with treatment A, the root activity, root SOD activity and soluble protein content, flag leaf SOD activity and soluble protein content of treatment B at different growth stages of 2 years were all significantly increased, and the MDA content of root and flag leaf were significantly decreased. And in treatment C, except the soluble protein content of root, other indexes were significantly decreased, and the MDA content of root and flag leaf was significantly increased. Under the condition of no application of water retaining agent (N), the significant differences of the three planting methods were different in different years and different growth periods. (3) Under the same row spacing, compared with no application of water retaining agent (N), only application of water retaining agent (Y) in treatment B could significantly increase root activity, root SOD activity and soluble protein content, flag leaf SOD activity and soluble protein content, and reduce MDA content in root and flag leaves at different growth stages of 2 years. And there showed different significant differences in different years and different growth periods under treatment A and C. (4) There was a significant positive or negative correlation (P<0.05) among root and flag leaf senescence characteristics with oat biomass and grain yield in irrigated oat cultivation. [Conclusion] To sum up, in the cultivation of oat under drip irrigation, the planting mode of reducing the row spacing to 15cm around the drip irrigation belt and applying 22.5kg/hm2 super absorbent polymers can adjust the senescence characteristics of oat and promote the formation of biological yield and grain yield of oat under drip irrigation. |
| Key words: oat, drip;irrigation, row;spacing, super;absorbent polymer, senescence;characteristic |
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