机械化湿式直接播种提高了大米生产效率,减少了碳足迹
Nguyen Van Hung1, Tran Ngoc Thach2, Nguyen Ngoc Hoang2
1International Rice Research Institute, Los Baños, Laguna, 4031 Philippines.
概括
机械化湿直接播种 (mDSR) 在越南提供了一种可持续的水种植方法. 这项技术减少了种子和肥料的使用,导致农民收入增加,碳足迹降低,与传统的播种相比.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 环境科学 环境科学
背景情况:
- 农作物建立对大米生产,产量和环境影响有重大影响.
- 传统的方法,如广播播种 (bDSR) 在越南的公河三角洲是资源密集的.
研究的目的:
- 评估机械湿直接播种 (mDSR) 对大米种植的好处.
- 在效率,收入和环境影响方面,将mDSR与鼓播种器直接播种 (dDSR) 和广播播播种 (bDSR) 进行比较.
主要方法:
- 在两个季节 (2020-2021) 进行了实地实验,比较了mDSR (30-70公斤/公),dDSR (80公斤/公) 和bDSR (180公斤/公).
- 根据每次处理的种植率,调整了施肥率.
主要成果:
- 种子数量较低的mDSR (30-70公斤/公) 将种子密度变化降低了40-80%,产量变化降低了0.1-0.3/公.
- 与bDSR相比,mDSR的生产率高出27-32%.
- mDSR带来了更高的净收入 (比bDSR高145-248美元) 和12-25%更低的碳足迹.
结论:
- mDSR提高了农业效率,增加了农民收入,并减少了环境排放.
- mDSR是将米种植转变为公河三角洲可持续性的关键技术.
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