| Effects of different mulching methods on soil carbon and nitrogen content and maize yield in semiarid farmland |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2022.01.03 |
| Key Words: mulching method dryland farmland soil organic carbon soil nitrogen maize yield |
| Author Name | Affiliation | | WANG Yuhao | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | PANG Jinwen | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | YANG Jialin | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | LIU Chang | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | LIU Zihan | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | YANG Baoping | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | JIA Zhikuan | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China | | ZHANG Peng | College of Agronomy, Northwest A & F University/ Key Laboratory of Crop Physiology, Ecology and Farming in Northwest Loess Plateau, Ministry of Agriculture and Rural Affairs/ Institute of Water\|saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling,Shaanxi 712100, China |
|
| Hits: 894 |
| Download times: 681 |
| Abstract: |
| A 3-years located experiment with four mulching patterns (R, ridge\|furrow with film mulching planting; P, flat planting with full plastic\|film mulching; S, straw mulching; and CK, conventional tillage without mulching) during the whole season were carried out.The effects of different mulching patterns on the change of farmland soil carbon and nitrogen and its components, the influence of the dry matter accumulation and grain yield of maize were studied to identify the effects of different mulching methods on regulating soil carbon.After 3-years, the content and storage of soil organic carbon (SOC) and total nitrogen (TN) showed a gradual decline trend under R and P, while S treatment showed an upward trend with an accelerating rate each year. The SOC storage in 0~40 cm soil layer of each treatment was S>CK>R>P, while the TN storage was S>CK>R>P. Compared with CK, S increased SOC and TN storage by 3.4% and 7.5%, respectively. Compared with CK, soil C/ N ratio increased by 7.9% (P<0.05) and 9.6% (P<0.05) in 0~20 cm soil layer under R and P, respectively.The C/N ratio of 0~20 cm soil layer was decreased by 9.9% (P<0.05) under S. Compared with CK, film mulching treatments (R and P) significantly reduced the contents of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) in 0~40 cm soil layer, while S treatment increased the contents of DOC and DON by 6.2% in two years. There was no significant difference in the vertical distribution of nitrate nitrogen (NO+3-N) content in the 0~100 cm profile between all treatments and CK. The content of NH+4-N in soil was lower than that of NO+3-N under different treatments, and the variation was small in different soil layers. The content of NH+4-N in deep soil (60~100 cm) increased significantly by 30.4% and 32.4% (P<0.05) under R and P, respectively. Film mulching treatments (R and P) significantly increased dry matter accumulation and grain yield, averagely increased by 17.4% (P<0.05) and 17.9% (P<0.05) under film mulching treatments (R and P) respectivelywhen compared with CK.In general, plastic film mulching (especially P) significantly promoted the grain yield, and straw mulching had a positive effect on improving soil carbon and nitrogen accumulation and maintaining soil sustainability. |
|
|
|