| Effects of different mulching treatments on accumulation and translocation of dry matter and yield in winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2024.04.17 |
| Key Words: straw strip mulching winter wheat dry matter accumulation, distribution and operation yield Logistic model |
| Author Name | Affiliation | | YANG Yong | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHAI Yuwei | Gansu Province Key Laboratory of Arid Habitat Crop Science, College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHANG Lei | Gansu Province Key Laboratory of Arid Habitat Crop Science, College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Zeyi | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LI Yazhen | Jingning County Water Bureau, Pingliang City, Gansu Province, Jingning, Gansu 743400 | | MA Juhua | Department of Physics and Hydropower Engineering, Gansu Normal College for Nationalities, Gannan, Gansu 747000, China | | XU Wenjie | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LIU Xiaofeng | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | CHAI Naying | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HUANG Caixia | College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A two\|year field experiment was carried out from 2020 to 2022. There were four treatments including straw strip mulching for 3 rows (SM3), straw strip mulching for 4 rows (SM4), straw strip mulching for 5 rows (SM5) and film mulching (PM）, with open field no mulching (CK) as control in the experiment. Effects of different mulching treatments on dry matter accumulation at regreening, dry matter accumulation and distribution in vegetative organs before and after anthesis, grain yield and economic benefit of winter wheat were analyzed. The results showed that, compared with CK, mulching treatments increased the above\|ground dry matter accumulation after winter wheat jointing stage as well as the average growth rate and maximum relative growth rate. The growth days and rapid growth stage of straw strip mulching treatments were extended, while PM treatment was the opposite. Mulching measures promoted the distribution of dry matter in spike axis+glume and increased the traslocation amount and contribution rate of dry matter from anthesis vegetative organs to grains, with the performance of PM>SM5>SM3>SM4. In the two growing seasons, the average yield of straw strip mulching increased by 1.94%~18.43%, among which SM5 had the highest yield. The yield of SM5 treatment increased by 18.47%~27.28%. The economic benefit analysis showed that the output to input ratio of straw strip mulching treatment was significantly higher than that of PM treatment, and SM5 treatment had the highest net benefit, which increased the benefit by 989.81~1 351.69 CNY·hm-2 compared with CK. In condusion, mulching treatment was beneficial to the above\|ground dry matter accumulation and pre\|flowering dry matter transfer to grain, and strawstrip mulching for 5 rows treatment had the best comprehensive effect of increasing yield and income, which can be a suitable cultivation mode for sustainable development of dryland wheat in Northwest China. |
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