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首页> 外文会议>British Crop Protection Council International Congress of the Crop Science and Technology >Improving rice-based cropping systems in north-west Bangladesh: diversification and weed management
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Improving rice-based cropping systems in north-west Bangladesh: diversification and weed management

机译：孟加拉国西北地区改善稻米种植系统：多样化和杂草管理

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Improving total productivity in the rice-rabi cropping system in Bangladesh depends on elevating component yields whilst minimizing the risk of drought to both crops. Direct seeding of rice has the potential of advancing crop establishment with the onset of monsoon rains and allowing greater opportunities for subsequent rabi (chick-pea, mustard, linseed) crops on residual moisture as the dry season commences. Agronomic studies over three years indicated that rice yields could be increased over traditional transplanting by use of direct seeding in both a widely used (Swarna) and more recently introduced cultivar (BRRI dhan 39). Oxadiazon applied pre-emergence controlled major weeds but one manual weeding was needed for yield protection from weed competition from Altenanthera sessilis, Cyperus iria and Paspalum distichum in particular. Socio-economic evaluation indicated that adoption of direct seeded rice was more likely to occur on large farms where competition for labour at times of peak demand was intense and where there was a greater proportion of land area favourable for rabi cropping.
机译：提高孟加拉国稻米种植系统的总生产力取决于升高成分产量，同时最大限度地减少干旱给两种作物的风险。直接播种稻米具有推进作物建立的季风雨，随后随后的rabi（小鸡 - 豌豆，芥末，亚麻籽）作物作为干燥季节开始的巨大机会。三年内的农艺学研究表明，通过在广泛使用的（淋巴结）和最近引入的品种（Brri Dhan 39）中使用直接播种，可以增加传统移植水稻产量。牛皮佐的射出前控制的主要杂草，但特别是从阿尔滕赫拉Sessilis，Cypetus Iria和Paspalum Distichum的杂草竞争所需的一个手动杂草。社会经济评估表明，在大量农场上采用直接种子稻米的采用更有可能发生在峰值需求时期的劳动竞争中，并且在rabi种植有利的陆地面积比例较大。

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