促进植物生长的根瘤菌可提高甘蔗的生长期生产力

Chanyarat Paungfoo- Lonhienne, N. Watanarojanaporn, Ian Petersen, Ratchaniwan Jaemsaeng, Peeraya Klomsa- ard, K. Sriroth
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引用次数: 1

摘要

在集约种植系统中,施用的化肥不到一半被目标作物利用,其余的养分造成环境污染。减少因低效使用化肥而产生的污染对农业具有巨大的重要性。近年来的研究表明,促进植物生长的根细菌(PGPR) Paraburkholderia sp. SOS3配合有机肥和化肥的组合施用,可以在降低化肥浓度的同时促进甘蔗的生长。本研究进一步研究了有机肥和化肥配施PGPR对甘蔗再生产量(即第二年再生作物)的影响。甘蔗再生的再生作物在第一年施用化学有机肥,使用或不使用PGPR(4个重复),第二年在工业标准实践中种植。结果表明,初植时接种PGPR对第二年再生甘蔗生长有较强的促进作用,无需再施PGPR。这些发现表明,将PGPR与有机和化学肥料结合使用,在提高甘蔗再生作物生产力方面具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Plant growth promoting rhizobacteria enhance the ratoon productivity of sugarcane
Less than half of the applied chemical fertiliser in intensive cropping systems is utilised by the target crops, with the remaining nutrients contributing to environmental pollution. Reducing the pollution derived from inefficient use of chemical fertilisers has enormous importance for agriculture. Recently, studies have shown that plant growth promoting rhizobacteria (PGPR) Paraburkholderia sp. SOS3 along with a combination of organic and chemical fertilisers, can offer a viable avenue to enhance sugarcane growth while reducing the concentration of chemical fertilisers. Here, we further investigated the effects of adding PGPR with combined organic and chemical fertilisers on sugarcane ratoon productivity (i.e. the second-year ratoon crop). The ratoon crop regenerated from sugarcane fertilised with the chemical-organic fertilisation in the first year, with or without PGPR (4 replicates), was grown in industry-standard practice in the second year. The results show that PGPR inoculation during the initial planting strongly promotes the growth of the ratoon sugarcane in the second year without reapplication of the PGPR. These findings show the high potential of using PGPR along with a combination of organic and chemical fertilisers for improving ratoon crop productivity in sugarcane.
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