| Research on ancillary machine with straw stubble burying combined with fast decomposing technique |
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| DOI：10.7606/j.issn.1000-7601.2010.06.48 |
| Key Words: straw returning stubble burying fast decomposition combined machine |
| Author Name | Affiliation | | DAI Fei | Engineering College，Gansu Agricultural University, Lanzhou, Gansu 730070，China | | ZHANG Fengwei | Engineering College，Gansu Agricultural University, Lanzhou, Gansu 730070，China | | ZHANG Keping | Engineering College，Gansu Agricultural University, Lanzhou, Gansu 730070，China | | HU Jingming | Engineering College，Gansu Agricultural University, Lanzhou, Gansu 730070，China | | FENG Yongzhong | College of Agronomy, Northwest A & F University，Yangling, Shanxi 712100, China | | HAN Zhengsheng | Engineering College，Gansu Agricultural University, Lanzhou, Gansu 730070，China |
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| Abstract: |
| Under the mechanization mode of crop harvest in northem China, a combined machine is designed com-
bining straw stubble burying and the straw returning with fast decomposition technology to handle the problem of large amount of straw stubble remaining in field after the machine harvest. The machine consists of degradation agent spraying system and straw stubble burying system. Field experiments show that the technique can make straw stubble fast decom-posing in short time， and the straw stubble decomposition rate of farmland using this machine reached 79.8% after 7 months, which was 18.5% higher than a single mechanical burying treatment. This technique also increases the soil mi-croorganism quantity and organic matter in soil. When the corresponding ancillary equipment works in the field, the speed should be controlled as more than 1.46 m/s, and the mounted deep plough's tilling depth should be limited be-tween 22~29 cm. |
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