| Effects of different straw mulching cultivation patterns on maize growth and water use in semi\|arid areas |
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| DOI：10.7606/j.issn.1000-7601.2023.06.17 |
| Key Words: maize straw mulch physiological characteristics yield water use semi\|arid region |
| Author Name | Affiliation | | XU Chen | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | YAN Weiping | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | ZHANG Lihua | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | ZHAO Hongxiang | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | SUN Ning | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | YU Jiang | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | LI Fei | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | MENG Xiangmeng | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | TAN Guobo | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China | | BIAN Shaofeng | Institute of Agricultural Resources and Environment, Jilin Academy of Agricultural Sciences/ Northeast Key Laboratory of Water Saving Agriculture, Ministry of Agriculture and Rural China, Changchun, Jilin 130033, China |
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| Abstract: |
| Research on rational straw mulching cultivation pattern is an important way to achieve green and efficient maize production under straw mulching conditions in semi\|arid areas. A two\|year field experiment was conducted to study the effects of different straw mulching cultivation patterns on maize root bleeding characteristics, photosynthetic characteristics, activities of enzymes related to carbon and nitrogen metabolism, growth and development, yield and its components and water use characteristics by setting up four treatments of traditional farming pattern (CK), straw mulching pattern (T1), straw mulching and subsoiling pattern (T2), and straw mulching and crushing and mixing pattern (T3). The results showed that the bleeding sap mass of maize roots and the contents of cytokinin (CTK) and auxin (IAA) in the bleeding sap demonstrated a trend of T3>T2>CK>T1, and the content of abscisic acid (ABA) displayed a trend of T1>CK>T2>T3. The content of CTK and IAA of T2 and T3 treatments increased significantly, while the content of ABA decreased significantly compared with CK and T1 treatments. The net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular carbon dioxide concentration (Ci), transpiration rate (Tr), apparent mesophyll conductance (AMC) and leaf water use efficiency (WUEL) of maize leaves all showed a trend of T3>T2>CK>T1, and the percentage of stomatal restriction (L>s) demonstrated a trend of T3LAI) of T2 and T3 treatments were significantly higher than that of CK and T1 treatments. The plant height and dry matter accumulation of T2 and T3 treatments were significantly increased compared with T1 treatments. The maize yield of T2 and T3 treatments increased by 6.45%, 12.13%, 16.59% and 19.39% respectively in two years compared with T1 treatment. In addition, both year and treatment had significant effects on maize yield, with the same trend on maize yield. The spike length, spike diameter and 100\|grain weight of maize were T3>T2>CK>T1, and the treatment of T2 and T3 was significantly higher than that of T1 treatment. The water use efficiency (WUE) of T2 and T3 treatment were significantly higher than that of CK and T1 treatment. To sum up, straw mulching and crushing and mixing pattern (T3 treatment) can be used as the recommended technical pattern for green and efficient maize production in semi\|arid areas of Jilin Province. |
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